Preheat oven to 420F°. Line a large baking sheet with parchment paper. Pat dry wings and season and add them to a large mixing bowl. Add in corn starch, salt, pepper and onion powder. Mix together. Place chicken wings on baking sheet or wire wrack. Do not overcrowd the baking sheet. Drizzle wings with olive oil and bake for 30 minutes per side. When you flip wings half way, make sure to drizzle the wings with olive oil.