01 - Arrange chicken breasts in the base of the slow cooker.
02 - In a mixing bowl, thoroughly whisk together barbecue sauce, chicken broth, apple cider vinegar, smoked paprika, garlic powder, onion powder, salt, and black pepper.
03 - Pour the prepared sauce mixture evenly over the chicken breasts.
04 - Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours, until the chicken is tender and fully cooked.
05 - Using two forks, shred the cooked chicken directly in the slow cooker and mix thoroughly with the warm sauce.
06 - Serve the pulled chicken on slider buns or tortillas, topped with chopped fresh parsley if desired.