Sheet Pan Chicken Fajitas
Sheet pan chicken fajitas are one of the easiest ways to bring bold Tex-Mex flavours to the table with minimal effort. Juicy strips of chicken breast roast alongside colourful bell peppers and onion, all coated in a homemade fajita spice blend and finished with fresh lime. Everything cooks together on one tray, making these oven-baked chicken fajitas perfect for busy weeknights, casual gatherings, or fuss-free family dinners.
With just a handful of ingredients and about 30 minutes from start to finish, this sheet pan version delivers the same sizzling flavours you’d expect from classic skillet fajitas — only easier and with less washing up.
Ingredients for Sheet Pan Chicken Fajitas
These easy oven-baked chicken fajitas rely on simple, fresh ingredients and a quick homemade seasoning blend that brings everything together.
- Chicken breast – Lean, tender and perfect for roasting. Slice against the grain for juicy, tender fajitas.
- Bell peppers – Use a mix of colours for sweetness and vibrant colour.
- Onion – A large onion adds savoury depth and caramelises beautifully in the oven.
- Olive oil – Helps the seasoning coat the chicken and vegetables evenly while roasting.
- Fajita seasoning – A blend of chilli powder, paprika, cumin, garlic powder, oregano and cayenne for classic Tex-Mex flavour.
- Fresh lime juice – Added at the end for brightness and balance.
- Tortillas and toppings – Warm tortillas, pico de gallo salsa, avocado, sour cream, cheese and cilantro are all great options.
Tips for Homemade Sheet Pan Chicken Fajitas
- Cut the chicken into thin strips (about 1.5–2 cm) and slice against the grain. This helps the chicken cook quickly and stay tender.
- Skip the parchment paper as the vegetables release enough juices to prevent sticking and help everything caramelise.
- Short on time or missing a few spices? Use about 2-3 tablespoons store-bought fajita or taco seasoning instead of the homemade spice blend.
How To Make Sheet Pan Chicken Fajitas
These sheet pan chicken fajitas are the kind of dinner we turn to when we want something big on flavour but low on fuss. Everything roasts together on one pan, letting the chicken get juicy and the peppers and onions soften and caramelise. Here’s how it’s brought together:
1) Toss everything together.
In a large bowl, combine the chicken strips, sliced peppers and onion with olive oil and fajita seasoning. Toss until everything is evenly coated.
2) Roast on a sheet pan.
Spread the mixture onto a large baking sheet in an even layer and roast until the chicken is cooked through and the vegetables are tender with lightly caramelised edges.
3) Finish and serve.
Squeeze fresh lime juice over the chicken and vegetables, then pile everything into warm tortillas and add your favourite toppings.
Find the exact ingredient amounts in the printable recipe card below.
Why You’ll Love These Oven-Baked Chicken Fajitas
t’s easy to see why sheet pan chicken fajitas are such a weeknight favourite. They’re simple, flavourful and wonderfully fuss-free!
- One pan, easy clean-up – Everything cooks together on a single baking sheet, so there’s barely any washing up.
- Quick and easy – Ready in about 30 minutes, making it perfect for busy evenings.
- Healthy and wholesome – Lean chicken breast, colourful peppers and simple ingredients make this a fresh, balanced meal.
- Easy to customise – Serve in warm tortillas, lettuce wraps, rice bowls or over a fresh salad. Leftovers are great for quesadillas, too.
- Great for sharing – Set out the toppings and let everyone build their own fajitas just the way they like.
If you loved these sheet pan chicken fajitas, here are a few more Tex-Mex favourites from that are just as easy and full of flavour:
- Tex-Mex Ground Beef Skillet – Think of it as deconstructed nachos: a hearty one-pan dish that’s perfect for scooping up with tortilla chips.
- Chili Con Carne Stew – A rich, chunky-style chilli with tender beef, beans and warming spices.
- Vegetarian Nachos – A flavour-packed vegetarian twist on classic nachos.
- Classic Pico de Gallo – Fresh tomato salsa that brightens up tacos, fajitas and more.
- Easy Vegetarian Quesadillas – Golden, crispy tortillas filled with melted cheese and vegetables.
Sheet Pan Chicken Fajitas
Ingredients
- 1 tablespoon chili powder
- 1 1/2 teaspoons paprika
- 1 1/2 teaspoons cumin
- 1/2 teaspoon garlic powder
- 1/4 teaspoon dried oregano
- 1/8 teaspoon cayenne pepper, or to taste
- 1/2 teaspoon salt, or to taste
- Freshly ground pepper, to taste
- 2,5 tablespoon olive oil
- 4 boneless skinless chicken breast halves (ca. 800 g), cut against the grain into thin strips (1,5-2cm)
- 3 bell peppers (any colour), thinly sliced
- 1 large onion, halved and thinly sliced
- 1/2 lime, freshly squeezed, plus more to taste
- Corn or flour tortillas, warmed
- Salsa or pico de gallo, pickled jalapeños, grated cheddar cheese, guacamole, sour cream, fresh cilantro leaves
Instructions
- Preheat the oven to 425°F / 220°C (200°C fan-assisted).
- Prepare the fajita seasoning: In a large bowl, combine the chilli powder, paprika, cumin, garlic powder, oregano, cayenne pepper, salt and pepper. Stir in the olive oil to form a loose paste.
- Add the chicken and vegetables: Add the sliced chicken, bell peppers and onion to the bowl. Toss well until everything is evenly coated with the seasoning mixture.
- Arrange on the sheet pan: Spread the mixture evenly onto a large rimmed baking sheet in a single layer.
- Bake: Roast for 18–20 minutes, then switch the oven to broil/grill for 2–3 minutes, until the edges of the chicken and vegetables are lightly charred.
- Finish and serve: Remove from the oven, squeeze fresh lime juice over the chicken and vegetables, and toss lightly. Transfer to a serving platter and sprinkle with fresh coriander if desired.
- Serve with warm tortillas, salsa, avocado, sour cream, lime wedges and any additional toppings. Enjoy!
Nutrition
Notes
- To warm the tortillas, wrap them in foil and place them in the oven during the last 3–5 minutes of cooking.
- If you prefer, you can replace the homemade fajita seasoning with 2,5-3 tablespoons store-bought fajita or taco seasoning. Simply mix the seasoning with the olive oil, then toss with the chicken and vegetables as directed.
- There’s no need to line the baking sheet with parchment paper. The chicken and vegetables release plenty of juices as they cook, which helps prevent sticking and allows the edges to caramelise nicely.
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