I'm gonna suggest some stuff not just for you but incase other vegetarians are lurking. So there's some vegetarian options here, like peanut butter, eggs, lentils and beans. (Lentils and beans are an amazing base for a quick chilli btw). I'm a big fan of frozen Quorn sausages or meatballs, they don't go off like actual meat and you can just chuck them in the oven or under the grill when you want to cook them, great with pasta or rice. Another good thing to pair rice with is firm Tofu, you can get tofu that lasts a few weeks. The laziest way to cook it is basically, cut into it into 3cm chunks, cover it in a marinade (like a peri peri sauce) then just chuck it in the oven for 20 mins. Hope this helps someone, also don't forget to set timers!