01 - Place chicken breasts in a single layer at the bottom of the slow cooker.
02 - Whisk together the barbecue sauce, honey, Worcestershire sauce, Dijon mustard, apple cider vinegar, smoked paprika, garlic powder, onion powder, and black pepper until well combined.
03 - Pour the sauce evenly over the chicken breasts, ensuring all pieces are thoroughly coated.
04 - Cover and cook on LOW for 4–6 hours, or until chicken reaches an internal temperature of 165°F and is very tender.
05 - Optionally shred the chicken directly in the slow cooker using two forks, then stir to coat with sauce. Serve hot, garnished with fresh parsley or chives if desired.