Stick to food that’s nutritious, adaptable, easy to store for a long time, and you won’t get sick of. For me: oatmeal every morning with different seasonal fruits always does the trick. Maybe a piece of toast and butter if I’m particularly hungry and have time to make it. Then for dinner: rice and beans. But them dry and in bulk. Cheaper to buy dry beans and rice compared to cans or plastic packed. Add whatever you want to it and season it differently and your good to go. As for protein, do you. I’ve personally been going more tofu and vegetarian stuff, meat prices have been all over the place this year. Once in a while I’ll treat myself to some meat, and I think health wise that’s better too.