For breakfast, I normally had a couple of hard boiled eggs and a piece of fruit. I hard boiled a dozen eggs at a time, so very quick and easy to pull a couple from the fridge. Some people swear by oatmeal, but it always spiked my blood sugar numbers.
Lunch - half a sandwich (one slice of whole-grain bread) piled high with meat, cheese and lettuce. Side of veggies and hummus. Or a salad with a scoop of chicken salad or tuna.
Dinner - I usually measured out my allotment of carbs in brown rice or pasta (cooked rice once on the weekend, enough to last all week), then added a quick-cooking protein (chicken cutlets, salmon) and vegetable (broccoli, salad, etc). That was easier for me than mixed dishes like casseroles, where it was hard to measure the carbs.
Snacks - mixed nuts and Craisins, sliced cheese with a couple of crackers.
Hang in there.... It'll be over soon!