Heat oven to 375°F. Spray 2 ovenproof baking dishes (about 5 inches in diameter) or 2 (15-oz) ramekins with cooking spray.
In medium microwavable bowl, microwave soup, frozen vegetables, chicken and pepper uncovered on High 5 to 6 minutes or until warm. Divide soup mixture evenly between baking dishes. Top each with 1 frozen biscuit. Place baking dishes on cookie sheet with sides.
Bake 25 to 30 minutes or until biscuits are golden brown. Let stand 5 minutes before serving.