Heat oven to 400°F. Spray large cookie sheet with cooking spray.
In shallow bowl, place 1/2 cup barbecue sauce. In large resealable food-storage plastic bag, place bread crumbs. Dip chicken into barbecue sauce. Place in bread crumb bag; seal and shake to coat. Place chicken on cookie sheet.
Bake 15 to 20 minutes, turning once, until chicken is no longer pink in center and bread crumbs are golden brown. Serve with additional barbecue sauce.