Start by preheating your air fryer to 400°F. In a large bowl, combine the halved Brussels sprouts with olive oil, kosher salt, and black pepper, mixing until well coated.
Spread the Brussels sprouts evenly in the air fryer basket and cook for about 6 minutes until they begin to soften.
In a separate bowl, mix the cubed chicken breast with chili oil, ground ginger, garlic powder, chili powder, and the remaining salt. Toss until the chicken is fully coated in the spices.
Add the seasoned chicken to the air fryer with the Brussels sprouts. Cook for an additional 12-15 minutes, shaking the basket halfway through, until the chicken is cooked through and the sprouts are crispy.
Once done, drizzle the sweet chili sauce and lime juice over the chicken and sprouts, tossing everything to ensure an even coating. Serve immediately with extra sweet chili sauce on the side for dipping.