Have a look at Diana Henry's book "From the oven to the table".
All in one dishes cooked in a roasting tray are good if you are feeding a family.
Nigella's sweetcorn fritters are quick and easy as is her med veg and halloumi bake.
Cheese and biscuits with grapes and apples?
Baked spuds?
Sardines, scrambled eggs, or baked beans, or poached egg, or paté and gherkins on toast?
Frittata?
Smoked lardons, pesto, fozen peas, broccoli, on pasta with parmesan (tastes better than it sounds and v quick to prep)?
Warmed good quality shop bought sausage rolls or samosas with quick shredded salad?
Salad nicoise?
Crumpet/pikelet with grilled cheese, ham and cress?
Bacon sandwich?
Tricolore or cous cous salad?
Quesadillas?
Yoghurt and fruit?
Pancakes?
Hot dogs?
Or cook once serve twice for eg:
Day 1 roast chicken with trimmings
Day 2 udon noodles, chicken stock, tin sweetcorn, perhaps some sugar snap peas/frozen peas/broccoli, bit of chilli, maybe some mushrooms or spring onions, can all be cooked together quickly in one pot, then serve with shredded pieces cold chicken.
Day 1: 2 x trays roasted mediterranean veg in oven (fennel, onion, tomatoes, peppers, courgettes, garlic etc with rosemary) serve one with frozen fish or chicken pieces.
Day 2: whizz up second tray of veg to make a sauce and serve with rice or pasta with grated parmesan, maybe some olives.
[Cooking much more bearable if you only do it every other day.]