Preheat oven 400. Prepare a 2-quart casserole dish with cooking spray; set aside. In a large saucepan, cook chicken until no longer pink. Stir in seasoning mix and bean liquid. Cook over medium-low heat for three minutes, stirring occasionally. Add beans, corn, and peas. Mix well and cook three minutes longer. Remove from heat and stir in cheese. Place mixture into prepared dish. Unroll cornbread dough and place horizontally over mixture in dish. Bake for 15 minutes, or until cornbread is lightly browned on top.