Slice the chicken breast into bite-sized pieces and pat dry with paper towels.
In a bowl, combine the egg white with a pinch of salt and pepper. Add the chicken pieces and toss to coat evenly.
Sprinkle the cornstarch over the chicken pieces and gently toss until each piece is lightly coated.
Preheat your air fryer to 400°F (200°C) for 3-5 minutes.
Lightly spray the air fryer basket with cooking spray. Arrange the coated chicken pieces in a single layer in the basket.
Air fry the chicken for about 10-12 minutes, shaking the basket halfway through to ensure even crisping.
While the chicken is air frying, prepare the orange glaze. In a small saucepan, combine the fresh orange juice, orange zest, garlic powder, ginger powder, and sesame oil.
Bring the mixture to a simmer over medium heat, stirring occasionally, until it reduces slightly and thickens, about 3-4 minutes.
Once the chicken is crispy and cooked through, remove it from the air fryer and place it in a serving bowl.
Drizzle the warm orange glaze over the chicken, toss gently to coat, and serve immediately.