Preheat the oven to 425°F. Line a baking sheet with foil and set a wire rack on top.
Pat the wings very dry with paper towels. Toss with the baking powder, salt, pepper, and garlic powder, then arrange in a single layer on the rack without touching.
Bake for 45-50 minutes, flipping halfway through, until the skin is deeply golden and crispy.
While the wings bake, pulse the cashews, nutritional yeast, garlic powder, and salt in a food processor until it looks like finely grated parmesan.
Melt the dairy free butter in a small saucepan over low heat. Add the garlic and cook for 1-2 minutes until fragrant but not browned, then stir in the Italian seasoning.
Toss the hot wings in a large bowl with the garlic butter until coated. Sprinkle with the dairy free parmesan and parsley, toss again, and serve right away.