Preheat oven to 350°. In a shallow bowl, combine first seven ingredients. Place bread crumbs in a separate shallow bowl. Coat chicken with sour cream mixture, then coat with bread crumbs., Arrange chicken on a rack in a foil-lined 15x10x1-in. baking pan. Bake, uncovered, 30 minutes. Drizzle with butter; bake 15-20 minutes or until juices run clear.