Start by preparing the marinade. In a bowl, mix the BBQ sauce, olive oil, apple cider vinegar, Worcestershire sauce, garlic powder, onion powder, smoked paprika, salt, and pepper.
Place the chicken breasts in a resealable plastic bag or a shallow dish. Pour the marinade over the chicken, ensuring each piece is well-coated.
Seal the bag or cover the dish and refrigerate for at least 1 hour, preferably overnight for maximum flavor.
Preheat your grill to medium-high heat.
Remove the chicken from the marinade and let any excess drip off. Discard the remaining marinade.
Place the chicken on the grill and cook for 6-7 minutes on one side without moving it.
Flip the chicken and grill for another 6-7 minutes, or until the internal temperature reaches 165°F (75°C).
Once cooked, remove the chicken from the grill and let it rest for 5 minutes before slicing.
Serve your grilled BBQ chicken with additional BBQ sauce on the side and enjoy!