Whisk together half the flour, the egg, the starch, and the water.
In a separate bowl, combine the remaining flour with salt and pepper.
Dip each piece of chicken first into the wet batter, then coat it in the seasoned flour mixture.
Place the chicken in the air fryer, making sure the pieces do not touch, and cook at 200°C for 15 minutes. Flip halfway through cooking.
Sauce
Grate the garlic.
Combine all the sauce ingredients in a shaker.
Pour the sauce into a pan and bring it to a boil, then add the cooked chicken and toss to coat well.
Add a tablespoon of sesame seeds and toss to combine.
To serve
Garnish the chicken with the remaining sesame seeds.
Video
Notes
Lightly oil the air fryer basket to prevent the chicken from sticking. Be sure to space out the chicken pieces so air can circulate properly, helping them cook evenly and develop a perfectly golden coating. You can also spray a little oil directly onto the chicken pieces.