Cook the pasta in a pot of salted boiling water until al dente. Drain well — do not rinse.
Place the drained pasta into a large bowl. Drizzle with olive oil, then add grated Parmesan, Italian seasoning, garlic powder, and salt. Toss until all pieces are evenly coated.
Air fryer method: Preheat air fryer to 400°F (200 °C). Spread pasta in a single layer (you may need batches). Air fry for about 10 minutes, shaking or tossing once or twice during cooking, until pasta becomes golden and crispy.
Oven-baking method: Preheat oven to 400°F (200 °C). Spread seasoned pasta on a parchment-lined baking sheet, making sure pieces are not overlapping. Bake about 20 minutes, stirring once halfway through, until pasta is crisp and golden.
Remove pasta chips from air fryer or oven, let cool slightly — they will crisp up more as they cool. Serve warm or at room temperature, with marinara sauce or your favorite dip if desired.