Cut the chicken thighs into bite-sized pieces and season them lightly with salt and pepper.
In a large mixing bowl, whisk together honey, soy sauce, minced garlic, minced ginger, rice vinegar, and cornstarch until well combined.
Add the chicken pieces to the bowl and toss them in the marinade, ensuring all pieces are well-coated. Allow it to marinate for at least 10 minutes (or up to 1 hour in the refrigerator for deeper flavor).
Heat vegetable oil in a skillet over medium-high heat. Once hot, add the marinated chicken pieces to the skillet.
Cook the chicken for about 5-7 minutes, stirring occasionally until golden brown.
Pour any remaining marinade into the skillet and cook for an additional 5-10 minutes, or until the sauce thickens and becomes sticky, ensuring the chicken is cooked through (internal temperature should reach 165°F or 75°C).
Remove the skillet from heat. If desired, sprinkle with sesame seeds and chopped green onions for garnish.
Serve hot over rice or with steamed vegetables.