Pour buttermilk over chicken in shallow dish; cover and refrigerate 1 hour to marinate. Remove chicken; discard buttermilk. Combine cracker crumbs, flour, salt and red pepper in shallow dish. Dip each piece of chicken into crumb mixture and coat evenly on all sides. Heat oil in large saucepan to 350 degrees. Add half of chicken; cook 15 minutes or until chicken is golden brown and cooked through. Remove and drain on paper towels. Repeat with remaining chicken.