Preheat your air fryer to 400°F (200°C) to ensure a hot environment for crisping.
Pat the chicken wings extremely dry with paper towels; removing moisture is the secret to a shattered-crisp skin.
In a large mixing bowl, whisk together the baking powder, smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Add the wings to the bowl and toss thoroughly until every wing is evenly coated in the spice and baking powder mixture.
Arrange the wings in the air fryer basket in a single layer, making sure they do not touch so the air can circulate freely.
Air fry for 20 to 25 minutes, flipping the wings halfway through, until they are golden brown and very crispy.
While the wings are cooking, whisk the sugar-free BBQ sauce and sriracha together in a clean bowl to create the spicy glaze.
In a small ramekin, stir the non-fat Greek yogurt and minced fresh chives together to create a cooling dipping sauce.
Once the wings are finished, immediately toss them in the spicy BBQ sauce mixture until well coated.
Serve the hot wings immediately with the chilled celery sticks and the herbed yogurt dip on the side.