I do 15 hour shifts, tomorrow I do a 15hr sleep in then a 9 hour thursday friday.
I've made a 'One pan Winter Hash' which I will divide into portions. That's breakfast's done I reheat in a microwave if I can't use the oven.
Lunch is usually homemade soup, or a sandwich with fruit or a salad.
Dinner, if I have leftovers (bolognese/chilli/casserole) in the freezer I take those, and have a jacket potato or rice cooked in the microwave with it.
For a quick one I have Asda Chickpea Dahl, Savoury Rice and some cook in the bag veggies (Sugar snap peas etc).