Preheat oven to 400 degrees, spray a 9 inch pie plate with cooking spray and set aside. In a medium bowl mix veggies, chicken and soup gently until combined. Pour into prepared pan. In a separate medium bowl mix Bisquick, milk, pepper and egg with a fork just until combined. Pour over veggie mixture. Spread out. Bake for about 30 minutes or until golden brown. Take out and let sit on counter 5 minutes before serving.