Place wings in a large bowl. Sprinkle the wings with the Head Country Bar-B-Q seasoning and baking powder. Toss to coat evenly.
Place a wire rack on a baking sheet lined with aluminum foil. Refrigerate for 8 hours.
When ready to grill, preheat grill to high heat (400˚F). Once the grill is hot, cover and grill wings for 30 to 35 minutes, flipping them once halfway through cooking.
While the wings are grilling, make the sauce by combining Head Country Bar-B-Q sauce and blue cheese dressing in a small bowl. Stir until smooth.
Remove wings from grill and add to a serving platter. Garnish with parsley and serve with sauce.