Preheat the oven to 425°F (220°C). Line a large baking sheet with aluminum foil and place a wire rack on top. Lightly grease the wire rack with olive oil.
Pat the chicken wings dry thoroughly with paper towels to remove all moisture. This step is essential for crispiness.
In a large bowl, combine the baking powder, kosher salt, black pepper, garlic powder, smoked paprika, onion powder, and cayenne pepper.
Add the chicken wings to the bowl and drizzle with olive oil. Toss well to evenly coat the wings with the seasoning mixture and oil.
Arrange the wings in a single layer on the prepared wire rack, making sure they are not touching each other.
Bake the wings in the preheated oven for 25 minutes. Then, carefully flip each wing over and continue baking for an additional 20 minutes or until the wings are golden brown and crispy.
For extra crispiness, you may broil the wings for 2-3 minutes at the end of baking, watching carefully to avoid burning.
Remove the wings from the oven and let them rest for 5 minutes before serving.