Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Pat the chicken wings completely dry with paper towels; removing moisture is the key to achieving a crispy skin without deep-frying.
In a large mixing bowl, toss the wings with avocado oil, sea salt, black pepper, garlic powder, and smoked paprika until evenly coated.
Arrange the wings in a single layer on the prepared baking sheet, ensuring they are not touching.
Bake for 35 to 40 minutes, flipping the wings halfway through, until the skin is golden brown and crispy.
While the wings bake, combine the tomato paste, apple cider vinegar, maple syrup, coconut aminos, and cayenne pepper in a small saucepan over low heat.
Whisk the sauce constantly for 3 to 5 minutes until it is smooth and slightly thickened, then remove from heat.
Once the wings are done, transfer them to a clean bowl and toss with the warm spicy BBQ sauce until every wing is glazed.
Serve the wings immediately with fresh celery sticks on the side for a cooling crunch.