Bake for 11 minutes and stir then return to the oven and bake 11 additional minutes or until the chicken is cooked all the way through. Due to the size of my baking pans and my oven, I placed one of the sheet pans on the bottom rack and the other on the middle rack. Halfway through cooking I switched them.
Make sure to check the temperature of the chicken for doneness as all ovens cook differently. It should read 165 in the thickest piece of the chicken.
If you'd like to brown your chicken fajitas, turn the oven to broil and bake for just a minute or two. Make sure to watch closely as it can burn very quickly when using the broiler.