First of all heat oil in a non stick pan then add in cumin seeds and wait till it starts crackling, now add in coriander powder, fennel powder, asafoetida, garam masala, red chilli powder, amchoor, ginger, green chillies and mix all the spices well.
Now add in green peas along with salt and mix well with all the spices then add about 1 tbsp water and cover and cook for little time.
Now mash the potatoes with hands or spoon well then add salt as per taste and mix well, now check the green peas mixture if it is cooked then turn the heat off and let it covered aside for few minutes.
Now put tawa on gas to heat, now grease hands with little bit of oil then take some mashed potatoes and make little thick small sizes of puris from entire potatoes.
Now take one puri then put some green peas stuffing on it then cover with another puri and make tikki with hands, make all the tikkis similarly.
Now put some oil on tawa and put tikkis for frying, turn the side after every minute so tikkis can be cooked nicely from all sides then take out the tikkis in a serving plate and serve with tamarind chutney and mango capsicum chutney.