I had to do a double take when I read that - really? Doritos with pizza sauce and cottage cheese?? lol. I may have to give that a try now that my curiosity is piqued. Although I don't know if I could handle the guacamole with the pizza sauce.
A little bit of interesting trivia, the cheese flavor of Doritos is actually just parmesan and garlic. The "orange" color is added just for visual appeal, though most people think it means the cheese is cheddar when it isn't.
If I am in a hurry, I will grab a small piece of ribeye, and quickly sear it then throw together some fajitas. I'm usually pretty simply with mine - steak (with mexican seasonings), cheese and iceberg lettuce. Maybe some salsa if I have it, but not often, because it's messier to eat. If I am in the mood for something a little healthier and meat free, I will just smear some guacamole on flour tortillas and top with a little cheese and lettuce, maybe some olives, and have some quick guacamole burritos - no cooking, and they are still very filling.