emilybites.com has something called 'cupcake meals'. it is meals that you cook in cupcake tins. they are around 150 calories each, the size of a cupcake (perfect portions) and have low fat and decent Protein.
there are menus for lasagna cupcakes, taco cupcakes, buffalo chicken cupcakes, etc. etc.
i am on the road most of the day through the week. i spend about an hour on sunday making these, then i have lunch all week long. i keep it in a lunchbox. if i'm close to a microwave, it takes 45 sec. to heat it up, or if i'm not close to one, they aren't bad cold either. if you can carry a lunchbox, they are perfect for on the go.
she also has great meals for all around too.