Chipotle is stellar if something prepared and warm is needed and you have a fridge+microwave where you’re staying. Ask for extra beans and rice, get a bunch of salsa (and a cup on the side) and a pack of cheap tortillas from another store. You can get four or more meals at 300-400cal each from one bowl, more if you have some cheap chips and salsa with it!
If you have a stove and lettuce, you can really “fancy” it up—plop two spoonfuls of bowl stuff on a tortilla, wrap it up tight, and shallow fry each side until brown. Mmmmmm