I could never batch cook in the evenings. I tend to do it in the weekend. I might make a chicken casserole say and cook a double batch and freeze one meal for another night.
Could you do things like roast chicken or pieces if it's easier? You can do the roast vegetables at the same time.
You can serve the left over cold chicken, assuming there is some and on the basis that this isn't the mumsnet elastic chicken that can feed fourteen, with maybe microwaved potatoes and a simple salad of lettuce and tomato etc. Or some nice sliced ham (not the slimey full of water sort) with salad and microwaved potatoes.
I think it helps to have salad leaves washed and in a container in the fridge with a paper towel to absorb moisture. The only time I ever trusted the washed bag of lettuce we all went down with a stomach bug. I wash and use a salad spinner. Or maybe you don't hate washing lettuce as much as I do.
The easiest chicken dish I know uses chicken pieces. Rub with lots of paprika. Pour a tin of undiluted condensed soup over the chicken pieces eg mushroom or celery. Bake covered for 1 hour at 180 degrees. Yes, the soup is processed and there is quite a long cooking time but it just cooks away while you get on with other things. It is surprisingly nice.
The second easiest dish is also chicken pieces. Flour chicken - do this over the sink for easy clean up. Take a tin of apricots in juice and half a packet of French onion soup - mix. Pour over chicken. I usually stick the apricots over the chicken piece. Cover and bake. Strangely this one seems to be ready after about 30-40 minutes at 180 degrees although it might be better cooked longer. Again, tasty albeit some processed ingredients.
Serves with unpeeled microwave potatoes that you've speared a few times with a fork. I also do rice in the mircrowave. I do a cup of rice and two cups of water uncovered for about 13 minutes, stirring a couple of times during the process.
If you want to serve a green vegetable, put some frozen peas in a cup. Put a saucer over it - no water added. Depending on quantity microwave a minute or two till they are piping hot. Minimal clean up.
Aluminium foil is your friend. Line cooking dishes or trays with it so you can just throw out the foil without having a big clean up job on the trays or dishes.
When my husband used to work overseas I found it really tough to get dinner on the table when I got home from work and I only had two children - albeit one was a vegetarian and the other a committed carnivore. I have the utmost respect for you going back to work in the circumstances. I would just try to gradually increase home cooked meals while still having some takeaway evenings.