I had something like this at a cart at the farmer's market- it was so good I started craving it! I guess it is the mexican version of quiche (in that it has a "crust" and eggs with stuff) and built like fried rice (uses up leftover ingredients).
Saute chopped onion and garlic in olive oil for a couple minutes. Now add eggs and fry or scramble with taco seasoning. When eggs are done, dish out and set aside to reserve.
Pour 1/4 C tomato salsa into a wide saute pan with about 1/4 C water and stir. Over medium heat, flip corn tortillas in the mixture to coat & soften.
Now layer egg mixture, shredded cheese, and vegetables over the top of each tortilla. Cover pan and continue cooking over medium heat until cheese is melted.
Serve immediately. Optionally- top with lettuce, tomato, sour cream and or avocado.