Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper or a wire rack for maximum airflow.
Pat the chicken wings thoroughly dry with paper towels to ensure they get crispy during roasting.
In a large bowl, toss the wings with avocado oil, sea salt, black pepper, garlic powder, and smoked paprika until evenly coated.
Spread the wings out on the prepared baking sheet in a single layer, ensuring they are not touching.
Bake for 35 to 40 minutes, flipping halfway through, until the skin is golden brown and very crispy.
While the wings bake, whisk together the sugar-free BBQ sauce and sriracha in a clean mixing bowl.
Remove the hot wings from the oven and immediately toss them in the spicy BBQ glaze until fully coated.
Serve the wings warm with fresh celery sticks on the side for a cooling crunch.