Preheat oven to 425°F. Line a baking sheet with foil and place a wire rack on top. Pat chicken wings completely dry with paper towels. In a large bowl, toss wings with baking powder, salt, black pepper, and garlic powder until evenly coated. Arrange wings in a single layer on the wire rack. Bake for 45–50 minutes, flipping halfway through, until golden and crispy. While wings bake, melt butter in a saucepan over medium-low heat. Add minced garlic and cook for 1 minute until fragrant but not browned. Remove from heat and stir in Parmesan cheese. Transfer baked wings to a large bowl and pour garlic butter mixture over them. Toss until evenly coated. Sprinkle with fresh parsley and serve immediately.