Preheat your oven to 375°F (190°C). Pat the chicken wings dry and transfer them to a large bowl or zip-top bag.
Add cornstarch, salt, pepper, garlic powder, and onion powder. Toss until the wings are fully coated.
Line a baking sheet with parchment paper and arrange the wings in a single layer. Lightly spritz them with cooking oil.
Bake for 20 minutes, flip the wings, spritz again, and bake for another 10 minutes—until crispy and fully cooked (internal temp should reach 165°F/74°C).
Taste and adjust seasoning. I always add more black pepper.