Preheat oven to 400°
Mix chicken legs with cornstarch, garlic powder and salt, parmesan cheese and oregano (in a bag or a bowl)
Place the chicken legs on a baking sheet lined with a wire rack.
Bake at 400° for 30-35 minutes (turning the chicken over halfway through) or until the chicken is fully cooked and crispy.
The "topping" goes on after the chicken legs are baked.
Use a silicone brush or spoon to apply the garlic parmesan topping when the chicken legs come out of the oven, then add the parmesan cheese on top.
Garnish with chopped fresh parsley