Heat oven to 425°F; oil an oven-safe rack over a foil-lined rimmed pan. Pat wings dry; toss with baking powder and 1/2 teaspoon salt.
Arrange in one layer; bake 25 minutes. Turn; bake 25 to 35 minutes more until crisp and at least 165°F.
Warm coating oil in a small saucepan over low 1 minute; remove from heat. Add cayenne, paprika, sugar, garlic powder, pepper, and remaining salt.
Thinly brush hot wings with spiced oil, stirring between strokes to keep spices suspended.
Rest 3 minutes; serve 4 appetizer portions with drained pickles alongside.