Preheat oven to 400°F. Cut chicken into bite-size pieces; spread onto bottom of 13x9-inch baking dish. Sprinkle with seasoning. Spread add-ins over chicken. Add topping. Stir 1-1/2 cups water into dry stuffing mix; spoon evenly over chicken.Bake 30 to 35 min. or until chicken is cooked through.