Preheat your oven to 425°F and line a large baking sheet with parchment paper.
Pat the chicken wings thoroughly dry with paper towels to ensure the skin gets maximum crispiness.
In a large mixing bowl, toss the wings with avocado oil, sea salt, black pepper, garlic powder, smoked paprika, and cayenne pepper until evenly coated.
Arrange the wings in a single layer on the prepared baking sheet, making sure they are not touching.
Bake for 35 to 40 minutes, flipping once halfway through, until the wings are golden brown and crispy.
While the wings bake, whisk together the low-sugar BBQ sauce and apple cider vinegar in a clean bowl.
Remove the wings from the oven, toss them in the spicy BBQ sauce mixture, and return them to the oven for 3 to 5 minutes to allow the sauce to caramelize.
Serve the wings immediately alongside fresh celery sticks for a cool and refreshing crunch.