G: To reheat thin fries in the air fryer and keep them crisp:

1. Preheat the air fryer to 375°F (190°C) — this helps crisp them faster.
2. Spread fries in a single layer — don’t overcrowd.
3. Optional: Lightly spray with oil if they seem dry.
4. Heat for 2–4 minutes, shaking halfway through.

Keep an eye on them; thin fries crisp fast but also burn quickly.