Make small pieces of the leftover chapati. Chop onions, green chilli and capsicums finely. In a pan, add oil and add mustard seeds and jeera. Later, add the green chilli and the chopped onion and saute for few minutes. Add the peanuts and sesame seeds. Roast on a low flame till it turns golden brown. Add the capsicum and saute for few minutes. Add the torn chapatis to this and mix well. Saute on a low flame and switch off the flame. Mix well and garnish with coriander.