Preheat oven to 425°; roughly chop onion/pepper mix into bite-size pieces + break chicken into bite-size pieces; in a bowl, mix chicken, onion/peppers + 6 tbsp sauce; set aside

Place 2 large pieces of foil on a sheet pan + oil the foil; divide mix into the center of each piece of foil + top each with 1-2 slices cheese

Bring the long edges of foil together + roll to seal, leaving 1-inch of space above ingredients; repeat with side ends of foil—your pack is sealed!; bake 12-15 min until chicken is hot + cheese is melty