Mix chicken with salt, turmeric powder, chilly powder and 1 tsp of pepper powder. Keep it for 30 min.
Heat oil in a pan.
Fry chicken well. Keep it aside.
Heat oil in another pan.
Add ginger-garlic paste and saute for 3 min.
Add chopped onion and fry, till it becomes brown.
Add fried chicken pieces and chillies and fry for 5 min.
Add ground tomato along with salt and saute for another 5 min.
Add pepper powder, chilly sauce, tomato sauce and soya sauce.
:- You can add more pepper powder according to you taste.