Got a slow cooker? If not maybe get one. Dead easy to batch cook in these literally just throw in some meat (or in my case veggie subs) some veg (you could be really lazy and use stuff that comes ready prepped like carrot batons or frozen veg) some stock & herbs/flavourings or even be really lazy and use the sachets of slow cooker sauces you can get.
Turn on - go to work and come home to a meal already done!
Freeze or even just refrigerate the leftovers - they’re fine in fridge for couple of days.
Also dead easy to do chilli and curries in slow cooker (the long cook time means the spices really absorb) serve with cous cous, micro rice, instant/ready to wok/micro noodles or even tacos or wraps easy to get in sour cream and guacamole to have with too, even ready grated cheese or poppadoms or naan bread to have with curry
You can include potatoes or other carbs in the dish or simply do some to go with when you get in - again you could go really lazy and do a microwaved jacket potato or instant mash or cous cous or even just have a nice buttered roll with it.
Other days for quick meals you can have stuff on toast - I love beans on toast but I “fancy it up” by spreading the toast with either marmite or pesto sauce and add grated cheese on top of the beans same works for tinned spaghetti or creamed mushrooms on toast
Eggs are quick and easy to cook in many different ways inc frittata or Chucky eggs (boiled eggs mashed in a cup with butter & salt serve with toast), Huevos rancheros...
I’m not cooking much at the moment and actually I’m not really cooking at all as I’m only heating stuff up - I like cooking but my health is very bad at the moment.
I’m veggie so I’m having things like veggie pasties, quorn buffet/picnic foods (savoury eggs which are like mini scotch eggs, cocktail “sausages”, “sausage” rolls, “steak” bake, stuff on toast, quorn “chicken” pieces which I just eat with some buttered rolls or crackers and have some veggies like cherry tomatoes, sliced raw peppers, carrot batons, instant mash with beans & cheese, the aforementioned Chucky eggs or scrambled eggs mixed in with quorn “ham” and some tinned sweetcorn is nice.
There’s loads of things that are quick, easy and fairly nutritious.
Get fruit in too - fresh, frozen and tinned are all good. I’m on a grapes “kick” at the moment, always have apples in, but I also like tinned pineapple and peaches either as they are or with yogurt or tinned custard.