Place the cut chicken pieces in a large mixing bowl and sprinkle cornstarch over them. Toss until the chicken is evenly coated.
In a frying pan or wok, heat the vegetable oil over medium-high heat. Once hot, carefully add chicken pieces in a single layer. Fry until golden brown and crispy, about 5-7 minutes. Use tongs or a slotted spoon to turn the chicken as needed. Once cooked, remove the chicken from the pan and drain on paper towels.
In a separate bowl, whisk together soy sauce, honey, sesame oil, rice vinegar, minced garlic, and minced ginger until combined.
In the same pan, remove excess oil except for about 1 tablespoon. Pour the sauce mixture into the pan and bring to a gentle simmer over medium heat.
Add the fried chicken pieces into the pan, stirring to coat the chicken in the sauce. Cook for an additional 2-3 minutes until everything is heated through and the sauce thickens slightly.
Sprinkle sesame seeds over the chicken and give it a final stir.
Serve hot, garnished with sliced green onions, over cooked rice or noodles.