Heat oven to 425°F. Line baking pan with aluminum foil, and spray with vegetable cooking spray.
Combine buttermilk and pepper sauce in resealable plastic bag. Remove skin from all chicken pieces except wings. Put chicken in bag, seal, and shake to coat. Refrigerate 10 minutes or up to 2 hours. Combine bread crumbs, cornmeal, poultry seasoning, and salt in shallow bowl. Drain chicken and dredge in crumb mixture.
Place coated chicken pieces on prepared baking pan, and spray well with vegetable cooking spray. Bake 20 minutes, spray again (do not turn chicken), and bake 20 minutes more. Let cool 10 minutes.