Make paratha as given in link below in recipe notes . Just don’t completely cook it and keep them half done.
Whip the eggs with salt and red chilli powder.
Fry the onion with ½ tablespoon of oil and keep them aside
Now Heat a griddle and place half done paratha on it. Pour ¼ whipped egg over it and cook for 2 minutes. Now flip the partha with egg layer side down and cook till egg is cooked completely.
Flip again and spread some vada /veggie curry over it as well as some fried onions and bell pepper sprinkle some chat masala powder and wrap it to make Kolkatta Kathi roll.
Likewise make all the rolls.
Serve hot with chutney or dip of your choice.