Pat the chicken pieces thoroughly dry with paper towels to ensure maximum crispiness.
In a large mixing bowl, combine the cornstarch, smoked paprika, garlic powder, onion powder, cumin, chili powder, salt, and pepper.
Add the chicken pieces and olive oil to the spice mixture and toss until every piece is evenly coated.
Preheat the air fryer to 400°F (200°C).
Arrange the chicken bites in a single layer in the air fryer basket, ensuring pieces do not overlap to allow proper airflow.
Air fry for 12 to 15 minutes, shaking the basket at the 7-minute mark to promote even browning.
Verify the internal temperature has reached 165°F (74°C) using an instant-read thermometer.
Remove from the air fryer and allow to rest for 2 minutes before serving.