Mix chickpea flour, nutritional yeast, salt and water and stir until there are no lumps
Dice up whatever veggies you want to add to your omelette
Add oil to a iron skillet and sauté the veggies on medium-low for about 3-5 minutes
Remove the veggies and add them to the batter and give the batter another stir
Turn up the heat to medium and pour the batter in the skillet and cook for about 5 minutes
Carefully loosen up the omelette with a spatula and flip the omelette to the other side
Cook for 5 more minutes until it is no longer soft in the middle
Top with cheese and fold over so that the cheese is in the middle
Cook for 2 more minutes, so the cheese is melted