Spray an omelette pan or a small pan that can make omelettes with the cooking spray. Heat over medium-high heat. If you are using the omelette pan, spray BOTH sides of the pan.
Pour the egg mixture into the heated pan and cook on the one side until it is lightly browned on the bottom and the omelette is cooked almost all the way through. If using an omelette pan, close the top lid while cooking. Cook until only the top is runny with raw egg.
Carefully flip the omelette over to cook the other side. If you have an omelette pan, you can simply quickly turn the entire closed pan over. The omelette will flip inside. Cook for 1-2 minutes.
Place the shredded cheese on top of half of the omelette, then fold the other half of the omelette over top of the cheese.
Let the cheese melt, then serve. Salt and pepper to taste. Top with pico de gallo and cilantro if desired.
The better tasting your taco meat, the better this omelette tastes!