Pound Chicken To 1/2-In. Thickness. Pour Buttermilk Into A Large Resealable Plastic Bag; Add Chicken. Seal Bag And Turn To Coat; Refrigerate For 8 Hours Or Overnight. In A Shall Bowl, Combine The Biscuit Mix, Cornmeal, Paprika, Salt, Poultry Seasoning, Garlic Powder, Pepper And Cayenne. Remove Chicken One Piece At A Time, Allowing Excess Buttermilk To Drain Off. Discard Buttermilk. Coat Chicken With Cornmeal Mixture; Place In A 13-In. X 9-In. X 2-In. Baking Dish Coated With Nonstick Cooking Spray. Bake, Uncovered, At 400 Degrees F For 12 Minutes. Turn Chicken. Bake 8-12 Minutes Longer Or Until Juices Run Clear And Coating Is Lightly Browned. Serve On Rolls With Lettuce And Tomato.