1Heat oven to 400º. Spray rectangular pan, 13x9x2 inches, with cooking spray. Remove skin and fat from chicken.
2Mix flour, cornmeal, cumin, chili powder and salt in heavy-duty resealable plastic food-storage bag. Mix buttermilk and pepper sauce in medium bowl. Dip chicken into buttermilk mixture, then place in bag. Seal bag and shake until evenly coated. Place chicken in pan; spray chicken lightly with cooking spray.
3Bake uncovered 40 to 45 minutes or until juice of chicken is no longer pink when centers of thickest pieces are cut.