Indulge in the luxurious flavors of truffle and Parmesan with these gourmet sweet potato fries. Process the sweet potatoes in a food processor to create thin fries. In a bowl, mix together truffle oil, grated Parmesan cheese, garlic powder, salt, and pepper. Toss the sweet potato fries in the truffle Parmesan mixture until coated. Air fry until crispy and golden, and savor the rich and decadent combination of truffle and Parmesan.