Slice sweet potatoes lengthwise into 1/2-inch thick wedges.
Place wedges in a mixing bowl and toss with olive oil until evenly coated.
Add sea salt, smoked paprika, garlic powder, and black pepper; toss again to distribute seasoning.
Preheat the air fryer to 400°F (200°C).
Arrange wedges in the air fryer basket in a single layer, ensuring minimal overlap for optimal airflow.
Cook for 15 minutes, shaking the basket or flipping the wedges at the 8-minute mark to ensure even browning.
Remove from air fryer once edges are crisp and the centers are tender when pierced with a fork.