Preheat oven to 425°F (220°C). Line a baking sheet with foil and place a wire rack on top.
Pat wings completely dry with paper towels.
Toss wings with baking powder, salt, pepper, and optional oil.
Arrange wings in a single layer on the rack.
Bake 40–50 minutes, flipping halfway, until golden and crispy.
Optional: Broil 2–3 minutes at the end for extra crispiness.
Meanwhile, combine all sauce ingredients in a saucepan over medium heat and stir until combined.
Simmer on low for 2–3 minutes until slightly thickened.
Toss hot wings with warm sauce.
Garnish with sesame seeds or sliced green onions if desired.