Flatten chicken to 1/4-in. thickness; top each with a slice of ham and cheese. Roll up and tuck in ends; secure with toothpicks.
In a shallow bowl, combine the flour, salt, paprika and pepper. In another bowl, whisk egg and milk. Place bread crumbs in a third bowl. Dip chicken in flour mixture, then egg mixture; roll in crumbs.
In a small skillet, brown chicken in oil on all sides. Transfer to an 8-in. square baking dish coated with cooking spray.
Bake, uncovered, at 350° for 20-25 minutes or until a thermometer reads 170°. Discard toothpicks; drizzle with butter.Yield: 2 servings.