Heat oven to 425°F. Set a wire rack on a rimmed sheet and lightly grease it.
Pat the wings very dry with paper towels to help them crisp.
Toss wings with baking powder and 1 teaspoon salt in a large bowl until evenly coated.
Mix paprika, garlic powder, onion powder, brown sugar, cayenne, black pepper, oregano, thyme, remaining salt, and lemon zest.
Drizzle wings with oil. Sprinkle on half the rub and toss to coat well.
Arrange wings skin-side up on the rack in a single layer.
Bake 25 minutes. Flip and bake 18–22 minutes more until deep golden and crisp.
Stir melted butter with remaining rub and lemon juice in a large bowl.
Toss hot wings in the butter mixture until coated. Rest 2 minutes and serve.