First of all wash and drain chicken pieces thoroughly. Now in a mixing bowl, add chicken with 1 teaspoon of chilli sauce, 1 teaspoon of soya sauce, and 1/2 teaspoon salt and pepper powder each. Mix it well and keep aside for 1 hour.
Now, sprinkle corn flour, all purpose flour on it and mix well.
Heat oil in a pan and shallow fry until chicken is well cooked.
Take them out and drain on a kitchen towel.
In an another pan, take 2 spoons oil from the same oil which we used to fry the chicken pieces. Add garlic and saute for about a minute.
Add onions, capsicum, spring onions, and green chilies and sauté for 2-3 minutes.
Add remaining soya sauce, Chilli sauce and ketchup. Add the fried chicken and mix well. Add remaining salt and pepper powder too. In case it looks too dry, sprinkle little water. Saute on high flame for 2 to 3 minutes. Switch off the flame.
Serve hot chilli chicken hot with fried rice or noodles.