Wash and pat chicken dry. Place chicken breasts in food storage bag or between sheets of waxed paper; pound gently to flatten a bit to even thickness.
In a shallow bowl or pie plate, combine Parmesan cheese, oregano, parsley, salt, and pepper. Dip chicken breasts in the melted butter then coat with Parmesan mixture. Place in a greased 9-inch square baking dish. Drizzle with remaining butter. Bake, uncovered, at 425° for 15 to 20 minutes, or until chicken is tender and juices run clear.
Serves 4.