Cut the chicken into bite-sized pieces and coat with cornstarch.
Deep-fry the chicken until golden brown and crispy.
In a pan, sauté minced garlic and grated ginger in a little oil.
Add fresh orange juice, orange zest, soy sauce, rice vinegar, brown sugar, and a cornstarch slurry.
Simmer until the sauce becomes glossy and slightly thick.
Add the fried chicken and toss until every piece is evenly coated.
Garnish with sesame seeds and sliced green onions. Serve hot with rice or noodles.