I usually walk into work with a yogurt, a banana, and some form of granola bar, which I slowly eat over the first 3 hours. Once or twice a week I"ll buy a breakfast sandwich.
For lunch I usually just want to get something quick and get back to whatever I was doing, so most of the time I get one of these: Thai food, pho, Chipotle, or Chickfila. I don't even think Chickfila and Chipotle are that good, but geographical convenience wins out (and even someone like me needs some variety every now and then).
Don't know what to put for dinner. I try to avoid fried foods. Spicy is good. Bad for me would be mushrooms, tomato chunks/whole, sour cream, cheeses besides cheddar/mozzarella/a couple others, eggplant, condiments like mayo/ranch/most things with vinegar, and probably a bunch of other stuff too. Oh, and fuck red onions.