Double meat, light rice, beans, fajita veggies, the 3 salsas, and lettuce. Comes out to like 650 calories and is pretty damn good. Depending on what else i've at that day I can add any combo of cheese, guac, or sour cream.  Another tip, if you use MFP, you can search for chipotle chicken, chipotle pinto beans, etc., to build your own burrito/bowl.