Add all ingredients except scallions to a Ziploc bag. Place in refrigerator to marinate for at least 30 minutes - up to overnight.
Preheat oven to 425degF
In large saute pan over medium high heat, add pieces of chicken. Pour marinade into a small saucepan and let simmer on medium-low while chicken is cooking. Cook chicken on each side for 3-4 minutes.
Transfer chicken to a parchment paper covered baking rack on a baking sheet and place in oven. Baste with simmered marinade 3 or 4 times during 30 minutes of cooking.
To serve, drizzle with remaining cooked down marinade and sprinkle with scallions.