01 - Arrange 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 in a medium bowl until thoroughly combined.
03 - Pour the sauce mixture evenly over the chicken, ensuring all pieces are thoroughly coated.
04 - Cover and cook on LOW setting for 4-6 hours, or until chicken reaches an internal temperature of 165°F and is very tender.
05 - For pulled chicken, shred using two forks directly in the slow cooker and stir to coat with sauce. Serve hot, garnished with fresh parsley or chives if desired.