Whisk together ¼ cup olive oil, lemon juice, chili powder, and cumin in a small bowl with a lid to create the chicken marinade
Add chicken strips to the marinade, ensuring they're well coated, then marinate for at least 30 minutes
In a different bowl with a lid, combine ¼ cup olive oil, fresh lime juice, and chile verde seasoning for the steak marinade
Coat thin strips of steak in the steak marinade and allow to marinate for at least 30 minutes
Preheat the oven to 400°F and prepare 2 large sheet pan by lining them with parchment paper
Arrange the marinated chicken and steak on one of the lined sheets, separating them with paper or foil
Place the sliced onions and bell peppers on the second lined sheet
Bake the chicken and steak for approximately 30 minutes, or until fully cooked
Bake the onions and peppers for 15-20 minutes until they are softened
Serve the tender steak, chicken, peppers, onions, cheese, sour cream, guacamole, and warm tortillas on a large tray for easy assembly
Enjoy your delicious easy Sheet Pan Steak Fajitas!
Notes
Be sure to slice your peppers and onions into similar-sized strips so that they cook evenly.
I like to slice the chicken thinner than the steak so that the steak does not overcook in the oven and the chicken still gets down.
You can use any type of steak you like for this recipe. I am a fan of a skirt or flank steak because they are lean and cook quickly, but sirloin steak is another great option.
If using a very lean cut of meat such as a top round or bottom round roast, you may want to marinate it overnight.