Honey Sesame Chicken

½ cup scallion

½ tbsp granulated garlic

2 lb skinless boneless chicken breast

¼ cup distilled vinegar

½ cup soy sauce

2 tbsp honey

2 tbsp sesame oil

1 tbsp arrowroot flour

2 tbsp sesame seed

2 tbsp rice vinegar

2 tbsp vegetable oil

½ cup red onion