You can microwave frozen veggies and pouches of rice, cook some shrimp, and then mix it all together with soy sauce, garlic powder, onion powder, and maybe some 5 spice powder. It takes about 15 minutes and would probably be ok frozen.
A rotisserie chicken and bagged salad is always a solid choice. Get two salads to have chicken twice. You could also make stock from the bones to use in soup or something. I like boiling frozen dumplings in stock and adding frozen veggies for a quick wonton soup.
I sometimes make a big batch of spaghetti sauce and freeze it. Just add pasta. I add whatever veggies I'm in the mood for, like onions, mushrooms, artichoke hearts, zucchini, and a little bit of carrots.