Preheat your air fryer or oven to 450°F.
In a small bowl, mix together the ingredients for the bang bang sauce until smooth. Set it aside.
In a separate bowl, combine the chicken with soy sauce, olive oil, oyster sauce, garlic, ginger, chili powder, smoked paprika, onion powder, salt, black pepper, and brown sugar. Mix well and let it marinate for 30 minutes if you have time.
After marinating, thread the chicken onto skewers. If you’re using wooden skewers, make sure to soak them in water for 30 minutes first to prevent burning.
Place the skewers in the air fryer and cook for 13 to 15 minutes, until they’re fully cooked and nicely charred.
Drizzle the bang bang sauce over the skewers and sprinkle with chopped green onions before serving. Enjoy!