Heat oven to 400°F. Spray cookie sheet with cooking spray. Place cereal in resealable food-storage plastic bag; seal bag and finely crush with rolling pin or meat mallet (or crush in food processor). Place cereal in shallow dish. Stir in jerk seasoning.
In large food-storage plastic bag, place chicken, buttermilk, mustard and pepper sauce. Seal bag; shake well. Remove chicken from bag; coat with cereal mixture. Place on cookie sheet.
Bake 14 to 16 minutes or until juice of chicken is clear when center of thickest part is cut (170°F). Meanwhile, in small bowl, mix salsa ingredients. Cover; refrigerate until serving. Serve chicken with salsa.