Mix flour, salt, pepper, and baking powder in a large bowl.
Coat each chicken wing thoroughly in this dry mixture.
Heat oil in a deep fryer to 350°F or use a heavy-bottomed pot with sufficient oil.
Fry wings in batches, ensuring the oil temperature stays above 325°F.
For the sauce, melt butter in a saucepan over medium heat.
Add minced garlic and sauté until fragrant, stirring frequently.
Blend grated Parmesan cheese into the butter and garlic, stirring until melted and combined.
Add red pepper flakes if desired for a little kick.
Toss the cooked wings in the garlic Parmesan sauce until thoroughly coated.
Garnish with parsley before serving.