In a pie plate or shallow bowl, combine butter, mustard, Worscestershire, and salt. In a plastic bag, combine crumbs and Parmesan cheese. Dip chicken in butter mixture, then shake in crumb mixture. Place in a ungreased 13x9x2 inch baking pan. Drizzle with any remaining butter mixture. Bale at 350 degrees for 40-45 minutes or until chicken is no longer pink and juices run clear.