Preheat your oven to 400 degrees F. Line a rimmed baking sheet with parchment paper.
Arrange the chicken wings on the prepared baking sheet. Spray them with oil, and sprinkle with kosher salt, pepper, garlic powder, onion powder, and smoked paprika. Then give them another quick spray of oil.
Bake the wings until the skin is browned and crispy, about 30 minutes. Lower the oven to "keep warm" (170 degrees F) and keep the wings in the oven for 30 more minutes, to crisp up the skin.
Ten minutes before the wings are ready, prepare the Buffalo sauce: gently melt the butter in a microwave-safe bowl. Add the hot sauce and whisk to combine.
Using tongs, toss the wings in the Buffalo sauce. Serve immediately, with (if desired) blue cheese dip and celery sticks.