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 to prevent sticking.
Pat the chicken wings dry thoroughly with paper towels to remove excess 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. Mix well.
Add the chicken wings to the bowl and drizzle with olive oil. Toss the wings until they are evenly coated with the baking powder mixture and oil.
Arrange the wings in a single layer on the prepared wire rack, making sure they are not touching to allow air circulation.
Bake the wings in the preheated oven for 20 minutes. Then, flip each wing over and bake for an additional 20-25 minutes, or until the wings are golden brown and crispy.
For extra crispiness, you can broil the wings for 2-3 minutes at the end of cooking, watching closely to avoid burning.
Remove the wings from the oven and let them rest for 5 minutes before serving. Serve hot with your favorite dipping sauce.