Preheat the air fryer to 380°F / 193°C for 3 minutes.
Pat the potato chips dry with paper towels, then toss with olive oil, cornstarch, salt, black pepper, and garlic powder until evenly coated.
Arrange the chips in a single layer in the air fryer basket without overlapping.
Air fry for 12 to 15 minutes, shaking the basket every 5 minutes, until golden and crispy at the edges.
Check at 12 minutes — the chips should be golden brown and crisp, add 2 to 3 more minutes if needed.
Serve immediately while hot and crispy for best texture.