2 tbsp. chopped fresh parsley leaves
4 skinless chicken breasts
1/4 tsp. ground black pepper
1/4 tsp. onion powder
1/2 tsp. garlic powder
1 tsp. ground mustard
1 tbsp. Worcestershire sauce
1 tbsp. molasses
1/4 cup brown sugar, packed
1/4 cup apple cider vinegar
1 cup ketchup