Preheat oven to 350 degrees. Line a baking pan or dish with aluminum foil. Coat chicken in bbq sauce. Place in baking dish. Salt and pepper the chicken. In a small bowl, mix together the mayonnaise, butter, scallions and cheese. Divide mixture in four and top each breast with one portion. Sprinkle on paprika. Bake uncovered for 20 -30 minutes, depending on the size of the chicken pieces.