Preheat oven to 350 degrees. Spray glass baking dish with cooking spray. In small mixing bowl, mix bread crumbs, Parmesean cheese & herbs. In another small bowl, place mustard. Coat chicken with mustard, then coat thoroughly with breadcrumb mixture and place in baking dish. Put butter pieces on top of chicken. Bake for approximately 45 minutes to 1 hour or until chicken is tender. NOTE: Don't let chicken touch in baking dish.