01 - Preheat oven to 400°F or heat air fryer to 375°F. Line a baking sheet with parchment paper or spray air fryer basket with nonstick spray.
02 - In a bowl, toss chicken pieces with salt, black pepper, and garlic powder until evenly coated.
03 - Mix almond flour and parmesan cheese in a shallow dish until well combined.
04 - Dredge each seasoned chicken piece in the almond flour mixture, pressing lightly to ensure thorough coating.
05 - Place coated chicken pieces in a single layer on the prepared baking sheet or in air fryer basket.
06 - Bake for 15-18 minutes or air fry for 12-15 minutes, turning halfway through cooking, until golden brown and cooked through.
07 - While chicken cooks, whisk together mayonnaise, sriracha, rice vinegar, sweetener, and sesame oil in a bowl until smooth and fully incorporated.
08 - Transfer cooked chicken immediately to the bowl with sauce. Toss gently to coat all pieces evenly with the bang bang sauce.
09 - Transfer to a serving platter. Sprinkle with chopped scallions and toasted sesame seeds. Serve hot.