Whip up these scrumptious Sheet Pan Chicken Fajitas for a quick and mouthwatering weeknight dinner! Just mix chicken, peppers, onions, and some delicious fajita seasoning onto a baking. Then, roast it all to crispiness in the oven. It's as easy as that! Enjoy these juicy fajitas with warm tortillas, your favorite toppings like sour cream, and a sq