Creating Orange Chicken is straightforward with these detailed steps:

1. Prep Chicken: In a mixing bowl, combine the bite-sized chicken pieces with cornstarch, flour, and a pinch of salt. Toss to coat evenly.
2. Whisk Egg: In another bowl, beat the egg and dip the coated chicken pieces into the egg mixture, ensuring they are well covered.
3. Heat Oil: In a large skillet or wok, heat about 1/2 inch of vegetable oil over medium-high heat.
4. Fry Chicken: Carefully add the chicken pieces in batches, frying them for about 4-5 minutes or until golden and crispy. Remove and set on paper towels to drain excess oil.
5. Prepare Sauce: In a separate pan, heat sesame oil. Add minced garlic and ginger, cooking for 30 seconds until fragrant.
6. Add Liquid Ingredients: Stir in sugar, orange juice, soy sauce, rice vinegar, hoisin sauce, and orange zest. Bring to a simmer.
7. Thicken Sauce: Let the sauce cook for a few minutes until it thickens slightly, stirring constantly.
8. Combine Chicken and Sauce: Add the crispy chicken pieces to the sauce and toss to coat thoroughly.
9. Serve: Once the chicken is evenly coated, remove from heat and transfer to a serving platter.
10. Garnish: Sprinkle with chopped green onions and sesame seeds for extra flair.

These steps will guide you in creating this irresistible Orange Chicken dish effortlessly.