This oven baked 4-ingredients sheet pan chicken fajitas recipe is exactly the kind of weeknight magic my college roommate taught me when we were both broke, tired, and hungry at 6 p.m. It uses just four ingredients you can grab in one quick grocery run, all tossed onto a foil-lined sheet pan so cleanup is almost nothing. Everything roasts together in the oven—juicy chicken, sweet bell peppers, and soft, caramelized onions—so you get that sizzling fajita vibe without standing over the stove.

Sheet pan chicken fajitas fresh from the oven
Sheet pan chicken fajitas fresh from the oven

It’s become one of my go-to dinner hacks for busy work nights, and it still feels like a little kitchen win every single time.

Serve these chicken fajitas tucked into warm flour or corn tortillas with whatever you have on hand—shredded cheese, salsa, sour cream, or a squeeze of lime if you keep citrus around. If you’re trying to bulk up the meal, add a side of rice, canned black beans, or even a quick bagged salad.

Chicken fajitas served in warm tortillas with toppings
Chicken fajitas served in warm tortillas with toppings

Leftovers are great over lettuce as a fajita salad or spooned onto tortilla chips for easy sheet pan nachos. I also love packing the extras into meal prep containers with rice or quinoa for grab-and-go lunches the next day.

Oven Baked 4-Ingredients Sheet Pan Chicken Fajitas

Servings: 4

Ingredients

1 1/2 pounds boneless skinless chicken breasts, sliced into thin strips

3 medium bell peppers (mix of red and green), sliced into thin strips
1 large yellow or white onion, sliced into thin strips
3 tablespoons fajita or taco seasoning blend (store-bought), plus more to taste