Rinse chicken; pat dry with paper towels. Cut chicken into pieces, about 1x3-1/2". In a shallow bowl combine cornflakes, corn meal, Parmesan, and, if desired, red pepper. Dip each chicken piece into flour, then in a litle water. Roll in cornmeal mixture to coat.
Spray a baking sheet with nonstick spray. Place chicken on the baking sheet. Bake in a 375 degree F. oven for 20 to 25 minutes or till tender and no longer pink. Meanwhile, for dipping sauce, stir together yogurt and mustard. Serve chicken with dipping sauce. If desired, serve with celery sticks and carrot slices.