Ultimate bulking food: Chipotle's Burrito
Tortilla
Rice
Beans
Corn salsa
Cheese
Chicken, steak, pork or beef
Guacamole
Sour Cream
Sour cream is the only thing in there that really has little benefit, look at all the good carb/protein sources in there. It even has healthy fats (avocado).
Here is the best part: When they get to the meat, after they put it on just be like, "come on man I know you can do better" or something like that and they'll load that fucker up. We're talking at least a pound. I'm getting hungry just thinking about it.
ALSO:
Papa Johns now has a GRILLED CHICKEN PIZZA!!!!!