These sheet pan chicken fajitas are proof that a big, flavorful dinner doesn’t have to mean a sink full of dishes. Juicy seasoned chicken and colorful bell peppers roast together on a single pan, coming out smoky, slightly charred, and packed with flavor — all in about 30 minutes with almost no hands-on effort.
Just pile everything into warm tortillas with your favorite toppings, and dinner is done. It’s one of those recipes that looks like a lot of effort but is actually one of the easiest things in your rotation.
Why you’ll love this recipe
- One pan, minimal cleanup — everything roasts together
- Ready in about 30 minutes — mostly hands-off oven time
- Budget-friendly — simple ingredients that feed a crowd
- Great for a build-your-own dinner — everyone can customize their fajitas
Ingredients
For the fajita seasoning
- 1 tablespoon chili powder
- 1 teaspoon ground cumin
- 1 teaspoon smoked paprika
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- ½ teaspoon salt
- ¼ teaspoon black pepper
For the fajitas
- 1 ½ pounds boneless, skinless chicken breasts, sliced into strips
- 1 red bell pepper, sliced
- 1 yellow bell pepper, sliced
- 1 green bell pepper, sliced
- 1 medium onion, sliced
- 3 tablespoons olive oil
- 8 small flour or corn tortillas, warmed
Optional toppings
- Shredded cheese
- Diced avocado
- Sour cream
- Fresh cilantro
- Lime wedges
Instructions
- Preheat the oven. Set your oven to 425°F (220°C) and line a large baking sheet with parchment paper or foil.
- Mix the seasoning. In a small bowl, stir together the chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and pepper.
- Toss everything together. Add the sliced chicken, bell peppers, and onion to the baking sheet. Drizzle with olive oil and sprinkle the seasoning evenly over everything, tossing to coat.
- Spread in a single layer. Arrange the chicken and vegetables in an even layer on the baking sheet, avoiding overcrowding so everything roasts instead of steams.
- Roast. Bake for 18–22 minutes, stirring once halfway through, until the chicken is cooked through and the vegetables are tender with slightly charred edges.
- Warm the tortillas. While the fajitas finish cooking, warm the tortillas in a dry skillet or wrapped in foil in the oven for a few minutes.
- Assemble and serve. Pile the chicken and peppers into warm tortillas and top with your favorite toppings.
Tips for success
- Don’t overcrowd the pan — if the chicken and vegetables are too crowded, they’ll steam instead of roast, so use two pans if needed.
- Slice everything evenly so it cooks at the same rate.
- Stir halfway through roasting for even browning on all sides.
- Let the chicken rest for a minute before serving so the juices settle.
What to serve it with
- Warm tortillas, flour or corn
- Mexican rice or cilantro lime rice
- A simple side of black beans
Frequently asked questions
Can I use a different protein? Yes — this same method works well with shrimp, steak, or even tofu, adjusting cook time as needed.
Can I make this ahead for meal prep? Yes — the chicken and peppers store well in the fridge for up to 4 days. Reheat and assemble with fresh tortillas and toppings when ready to eat.
Can I make it spicier? Add a pinch of cayenne to the seasoning mix, or toss in a sliced jalapeño with the peppers before roasting.
Do I need to flip the pan halfway through? Stirring once halfway through helps everything brown evenly, but it’s not strictly required if you’re short on time.