In a large skillet (pan or wok), heat 2 Tablespoons of cooking oil, and once hot, add marinated chicken (with marinade).
Cook chicken for 3-4 minutes stirring only occasionally. You want the edges to brown, then remove chicken from pan and set aside.
Add 1 Tablespoon of cooking oil to the same skillet, and stir in garlic, ginger, diced peppers and carrots, and stir fry for 1-2 minutes.
Stir in the sauce mixture, and bring it to a boil, stirring constantly.
When it starts to thicken add chicken back into the pan and stir in the broccoli.
Mix all of the ingredients through the sauce until the chicken is evenly coated and sauce has thickened, (about 2 minutes).
Stir in green onions, and peanuts, toss well and continue to cook for a further 1- 2 minutes.
Serve immediately over steamed rice!