Creating delicious Orange Chicken at home is easy if you follow these steps:

1. Prepare the Chicken: In a large bowl, mix the flour, cornstarch, salt, pepper, garlic powder, and ginger powder.
2. Coat the Chicken: Dip the chicken pieces into the beaten eggs, then coat them evenly in the flour mixture.
3. Heat the Oil: In a large skillet or deep fryer, heat about 2 inches of vegetable oil over medium-high heat.
4. Fry the Chicken: Once the oil is hot, carefully add the coated chicken pieces in batches. Fry until golden brown and cooked through, about 5-7 minutes per batch. Remove and drain on paper towels.
5. Prepare the Sauce: In a saucepan, combine the orange juice, orange zest, sugar, soy sauce, rice vinegar, and sesame oil. Bring to a boil over medium heat.
6. Thicken the Sauce: Once boiling, add the cornstarch slurry while stirring continuously. Cook until the sauce thickens, about 2-3 minutes. If desired, add red pepper flakes for a spicy kick.
7. Combine Chicken and Sauce: In a large bowl, toss the fried chicken with the orange sauce until evenly coated.
8. Serve: Transfer the Orange Chicken to a serving plate or bowl.