Preheat oven to 350°F. In small bowl, whisk together butter, pepper sauce and vinegar. Dip drumettes in butter mixture; arrange in single layer in large baking pan. Sprinkle with Hidden Valley® Original Ranch® Salad Dressing & Seasoning Mix. Bake until chicken is browned and an internal temperature of 165°F has been reached, about 30 to 40 minutes. Sprinkle with paprika. Serve with Hidden Valley® Original Ranch® Dressing and celery sticks.