Make the Sauce
In a bowl, combine all the sauce ingredients and mix well. Set aside.
Prep the Chicken
Cut the chicken thighs into bite-sized pieces and toss them with cornstarch until evenly coated.
Fry the Chicken
Heat vegetable oil in a skillet over medium-high heat. Cook the chicken in batches until golden and crispy on all sides.
Drain
Transfer the cooked chicken to paper towels or a wire rack to drain excess oil.
Cook the Sauce
Pour the prepared sauce into a pan and simmer, stirring, until it thickens.
Combine
Add the crispy chicken to the sauce and toss until evenly coated.
Garnish
Sprinkle with green onions, sesame seeds, and orange zest if desired.
Serve Immediately
Serve hot for the best texture and flavor.