Breakfast - full fat Greek yoghurt, boiled eggs (take less than 5 minutes), or some pre-cooked low carb sausages. Alternatively, leftovers from the previous night's dinner - breakfast doesn't have to be about specific foods. You can thank Mr Kellogg for that concept.
Lunch - how about making some soup? Or picky things like cheese, ham, hard-boiled eggs, olives, cucumber and celery. One of my staple stand-by things when I was working was a tin of tuna (in oil) that I always had in my desk drawer - high protein and good fats. If you have a jar of mayo to hand that makes a quick and tasty lunch.
Dinner - the secret here is planning ahead and also cooking ahead and freezing. Make a big batch of something like Spanish chicken (essentially chicken, chorizo, paprika, peppers and tin of tomatoes) or a beef stew or a pork curry, then portion into one or two person-sized portions in the freezer so you've always got a tasty meal to hand.
For other ideas, have a look at the Bootcamp recipe threads, stickied at the top of the Bootcamp topic.