Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.
You can use leftover chicken to make this Buffalo Chicken Pizza recipe by user EatandRun:
Top a 12-inch prepackaged thin pizza crust with 6 ounces shredded mozzarella cheese and 2 ounces crumbled blue cheese. Toss together 1 cup chopped chicken with 2 tablespoon Frank's RedHot(R) sauce in a bowl. Top pizza with chicken mixture and 1/4 cup chopped red onion. Bake according to package directions, about 10 minutes. To serve, top with chopped celery leaves and additional hot sauce.