Preheat air fryer to 375°F for 5 minutes. Lightly coat the fryer basket with cooking spray.
Combine apple slices, maple syrup, orange zest, oil, vanilla, cinnamon and salt in a medium bowl; toss well to coat.
Working in batches if necessary, spread the apple slices in a single layer in the fryer basket.
Cook until the apples are tender and browned at the edges, about 12 minutes.
