So not authentic in any way but in the spirit of Spanish/Mexican cuisines
Method
Heat the oil in a big pan (a wok or big deep frying pan with a lid is ideal)
Fry the cumin, sesame, coriander stalks and chilli for a minute or so, then add the onions, peppers, garlic, tomatoes and courgettes. Now it's basically a stir-fray
When the veg is pretty much done (it steams if you put the lid on so only takes a few minutes), stir in the coriander leaves