Peel and cut sweet potatoes into 1/2-inch cubes (see note 3). Measure to ensure 3 cups.
Add sweet potato cubes to a bowl (not air fryer basket) and drizzle with oil. Toss with paprika, garlic powder, onion powder, salt, and pepper until evenly coated.
Preheat air fryer to 400℉. If your model doesn’t have a preheat function, run it empty for 3 minutes at 400℉. Spread seasoned sweet potatoes in a single layer in the air fryer basket, avoiding overlap. (Cook in batches if necessary.)
Air fry for 12–16 minutes, shaking halfway (return cubes to an even layer), until tender and slightly crisp with a charred exterior. Add more time if needed for crispiness, checking every 1–2 minutes.
Taste and add more salt if desired, then enjoy right out of the fryer!
Video
Notes
Note 1: When selecting sweet potatoes, the best varieties for roasting are Red Garnet or Jewel. Pick firm, unblemished sweet potatoes; avoid soft or wet ones.Note 2: Resist the temptation to reduce the oil! It is key to the final texture. Less oil means the potatoes won’t be as crispy.Note 3: When cutting sweet potatoes, peel them for optimal flavor and texture. Cut off ends. Thinly slice a strip on the bottom for stability on a cutting board. Slice into 1/2-inch rounds. Chop rounds into equal 1/2-inch pieces.Storage: Keep in an airtight container in the fridge for up to 5 days.