In a saucepan, add soy sauce, rice vinegar, toasted sesame oil, honey, brown sugar, garlic, ginger and corn starch.
Whisk until combined and cook over medium heat until sauces starts to bubble and is thickened.
Set aside and cool before using. Divide sauce, reserving half for serving.
Thread chicken pieces onto skewers.
Brush with teriyaki sauce in a thick layer. Refrigerate while you prepare a grill fire.
Prepare a grill fire to 350°.
Cook chicken with the grill closed for 5 minutes.
Brush chicken with teriyaki sauce and turn the skewers.
Continue to cook until chicken reaches 165° using a digital meat thermometer.
Remove from grill and serve with reserved teriyaki sauce if desired.