Prep the oven and pan: Preheat to 425°F (220°C). Line a sheet pan with foil for easy cleanup.
Place a wire rack on top and spray with cooking spray.
Dry the wings well: Pat wings thoroughly with paper towels. The drier they are, the crispier they’ll get.
Mix the dry coating: In a bowl, combine baking powder, cornstarch, salt, pepper, garlic powder, and smoked paprika.
Coat the wings: Toss wings with the dry mixture until evenly coated. Add a teaspoon or two of oil if you like a slightly richer crust.
Arrange and bake: Place wings on the wire rack in a single layer with space between them.
Bake for 35 to 45 minutes, flipping halfway, until deeply golden and crisp.
Make the sauce: Warm BBQ sauce in a small saucepan. Stir in honey (or brown sugar) and apple cider vinegar if using. Adjust sweetness and tang to taste.
Toss to coat: Transfer hot wings to a large bowl, add the sauce, and toss until every piece is glossy.
Broil to finish: Return sauced wings to the rack and broil on high for 2 to 4 minutes, watching closely, until the sauce bubbles and caramelizes.
Rest and serve: Let wings sit 3 to 5 minutes to set the glaze.
Garnish with green onions or sesame seeds. Serve with ranch or blue cheese if you like.