01 - Arrange chicken breasts in a single layer at the bottom of the slow cooker.
02 - Whisk together barbecue sauce, honey, Worcestershire sauce, garlic powder, onion powder, smoked paprika, and black pepper in a bowl until thoroughly combined.
03 - Pour the sauce mixture evenly over the chicken breasts.
04 - Cover and cook on low heat for 4 to 5 hours or on high heat for 2 to 3 hours, until chicken reaches an internal temperature of 165°F and is tender throughout.
05 - Transfer cooked chicken to a cutting board, shred using two forks, then return to the slow cooker and stir to coat evenly with sauce. Serve hot, garnished with fresh chopped parsley if desired.