Add 6-7 tablespoons of corn starch to the chicken and mix until combined and chicken is coated lightly.
Heat oil in a wok, frying pan, or deep fryer to 350F (177C).
When the oil is hot, add the chicken into the oil to cook in batches, careful not to overcrowd.
Cook the chicken for about 5-6 minutes and set aside on a plate with paper towel or newspaper.
In a new wok or frying pan, heat 2 tablespoons of oil.
When hot, add in the 2 tablespoons of ginger-garlic-onion mix reserved from preparation and cook until toasty and brown, approximately 1-2 minutes.
Add in the onions and green pepper chunks, cooking for about 2 minutes to keep the veggies somewhat crisp.
Stir the sauce (the corn starch settles) and add to the pan.
Keep stirring the sauce until it thickens.
Once thickened, turn off the heat and add in chicken, mixing until the chicken is coated with the sauce.
Enjoy your Chilli Chicken with some rice!