Cut the chicken breasts into bite-sized pieces.
Season the chicken with cornstarch, chili powder, salt, and pepper. Mix well and set aside.
Preheat the air fryer for about 5 minutes. Spray a little oil on the air fryer basket. Place the chicken pieces in the basket. Spray the chicken with cooking oil. Air-fry them at 400 degrees F for 6 minutes. After 6 minutes, take the chicken out of the air fryer and set it aside.
Melt some butter in a heated pan.
Once the butter is melted, add the minced ginger and stir until fragrant. Pour in the orange juice and stir well.
Season the mixture with sugar, soy sauce, rice vinegar, and oyster sauce. Continue stirring on low heat. Add the orange zest and give the sauce a good stir.
Add the fried chicken to the pan and stir for 5 minutes or until the sauce thickens. Cut the heat and remove the chicken from the pan.
Garnish the chicken with some cilantro and serve it alongside your favorite salad.