Preheat the air fryer to 350°F–375°F (175°C–190°C) for 2–3 minutes
Place pizza slices in a single layer in the basket
Lightly spray the basket with oil if pizza tends to stick
Reheat for 3–5 minutes for 1 slice
Reheat for 5–7 minutes for multiple slices (keep in a single layer)
Check at the halfway point to avoid over-browning
If the cheese needs more melt, add 1–2 minutes
Let rest for 1 minute before eating to set the cheese and prevent burns