I like cooking books for ideas, but don't really follow recipes, or not more than once, one pot meals in particular are more about combining ingredients you like. I'm lucky that I like most veg, so pasta or rice with veg, sometimes with some fish and occasionally meat is simple enough. I have no difficulty cooking rice or pasta in single portions, quite large portions admittedly, but not excessively so. I do have simple tastes, pasta and leeks with some cheese grated on top is a perfect meal, or white fish poached in a tomato sauce, or a long term favourite, kedgeree, though you'd need to hard boil the eggs first, I don't have a recipe for that, there's probably 100's, by varying the rice, greens and spices you could have it every week and it'd be different each time - the recipe in Jack Monroe's bootstrap book is a good base.
But why the one pot? And is it always the same pot? Microwave as well? Do you have a steamer?(Edit, just seen from your other thread that you do) I have a steamer and a sauté pan and although i have some other bits would get on fine with just those two.