Preheat air fryer to 400°F (200°C).

Wash and peel the sweet potatoes thoroughly.

Cut sweet potatoes into even 1-inch cubes.

In a mixing bowl, toss cubed sweet potatoes with olive oil, salt, pepper, and any optional seasonings.

Place seasoned sweet potato cubes in air fryer basket in a single layer.

Cook for 15-20 minutes, shaking halfway through to promote even cooking.

Check for doneness; they should be golden brown and fork-tender.

Let cool briefly before serving; transfer to a serving dish.