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