Using a fork, gently tenderize the chicken breast to ensure even cooking. Cut it into bite-sized pieces suitable for a bowl.
In a bowl, combine the egg white and panko breadcrumbs. Season lightly with a pinch of salt if desired.
In a separate small bowl, whisk together the fresh orange juice, soy sauce, grated ginger, and minced garlic to create the orange marinade.
Coat the chicken pieces with the egg white and panko mixture, ensuring an even, light crust forms on all sides.
Lightly toss the coated chicken in half of the orange marinade, reserving the remaining sauce for finishing.
Preheat the air fryer to 400°F. Spray the basket with a bit of olive oil or brush lightly with oil.
Place the chicken pieces in a single layer in the air fryer basket and air fry for 10-12 minutes, turning halfway through, until the exterior is crisp and the chicken is cooked through.
While the chicken is cooking, steam or lightly sauté the broccoli florets with a drizzle of olive oil until tender yet crisp.
Once the chicken is done, transfer it to a serving bowl, drizzle with the remaining orange marinade, and top with steamed broccoli.
Garnish with chopped scallions and serve immediately, enjoying a balanced bowl of crispy, tangy orange chicken.