Marinate chicken in 1.5tbsp chilli powder+a pinch of turmeric powder+salt+1/2tsp garam masala powder+1tbsp lemon juice for atleast an hour or more.... Later add 1/4 of the onions and pressure cook adding 1/2cup water for 2 whistles....

Cook tapiocas in lots of water when dey cum to a boil discard that water and fill water and cook by adding 1/4tsp turmeric powder and salt till done.... Later drain the water completely

Heat a kadai pour 2-3 oil and tip in whole spices when they are aromatic add onions+curry leaves and fry till they are browned here and there then add tomatoes and cook till mushy..once they are mushy add ginger-garlic-green chilli paste and saute till their raw smell disappears.... Now add in all the dry masalas and saute for a minute... if needed add lil water and saute.....

Then tip in the cooked chicken along with it's gravy and give it a good mix...add some coriander leaves chopped and now close the lid and cook on low flame for 3-4 mins...open and add cooked tapiocas and a sprig of curry leaves and mix nicely and close the lid for 2 more mins so that all flavors of gravy seep into the tapiocas..now squeeze 1/2lemon give it good mix n later mash the tapiocas nicely and swicth off the flame.

If u want u can garnish with chopped onions and coriander leaves..... serve hot.....