This recipe i usually use for an omelette. In a pan, cook the ham, pepper, tomato, mushrooms, onion. while they are cooking in a bowl mix a few eggs with a little milk and a tablespoon of flour, a pinch of salt and pepper. When they are done cooking cut a few croissants in half and press them so they look like boats. Place the croissant on a baking sheet and add the filling from the pan with the egg mixture. Bake in the oven until cooked. my setting is for a convection oven at 220 degrees celsius. when the egg is cooked the croissant is not burnt.
A lot of restaurants add a dab of pancake batter to scrambled eggs to help make them fluffy. In that case there's some leavening in the batter. I guess a touch of plain flour would add a little body to it? I wonder if self rising flour would be a better choice for fluff?