Prep the chicken: Pat the chicken dry with paper towels.
Add to a bowl with salt, pepper, garlic powder, onion powder, and smoked paprika. Toss to coat evenly.
Dust with cornstarch: Sprinkle cornstarch over the seasoned chicken and toss until every piece is lightly coated. Drizzle with 1 tablespoon oil and toss again to prevent dry spots.
Preheat the air fryer: Set to 390–400°F (200–205°C).
Let it heat for at least 3 minutes. Lightly spray the basket with oil.
Cook in batches: Place chicken in a single layer, leaving space between pieces. Air fry for 8–10 minutes, shaking or flipping halfway.
Chicken is done when crisp and the internal temperature hits 165°F (74°C).
Mix the sauce: In a small saucepan over low heat, combine sweet chili sauce, soy sauce, lime juice, sriracha (if using), garlic, and ginger. Warm for 2–3 minutes, stirring. You want it glossy and slightly thickened, not boiling.
Sauce the bites: Transfer cooked chicken to a large bowl.
Pour the warm sauce over and toss gently until well coated. For stickier bites, let them sit for 2 minutes to set.
Garnish and serve: Sprinkle with green onions and sesame seeds. Serve immediately with lime wedges.