Preheat oven to 275 degrees F.
Rinse and dry chicken wings really well.
Place in a large bowl, add corn starch, salt, pepper, and garlic powder and toss to coat well.
Line a baking sheet with foil or parchment paper and place a wire cooling rack on the tray. Spray with non-stick spray or lightly grease. Place chicken wings on rack so they aren't touching.
Bake on middle rack for 30 minutes. Remove from oven and turn.
Increase oven temperature to 450 degrees F. and place wings back in oven (you don't have to let it preheat)
Bake for another 30 minutes or until golden and crispy.