Anytime you make rice for dinner, always make extra for fried rice a day or two after. Simple, yet complex, chop up a few veggies here and there throughout the morning at your leisure, some flavoring sauces in the fridge - chili garlic, black bean - whatever, I throw it all in. Once you have your veggies done, and a hot wok, if you use eggs as the protein, restaurant quality lunch (or better) is done in about 5 min.
Huevos rancheros whenever you make salsa and have some tortillas leftover or just laying around.
Laxmi brand frozen Indian foods. I've been on a long search for anything edible in the realm of processed Indian Food. This brand, so far, has been the only thing that's come remotely close to edible for me. I've only had the Mutter Paneer, and I was thoroughly impressed. Secret, I use El Milagro Tortillas Caseras (fajita style) for a fluffy flatbread alternative to naan, and waaaaaay cheaper. I've tried for years to find one of those shelf stable Indian foods that is edible. They are all absolutely horrendous, IMO. And those Trader Joe's frozen bowls? They couldn't be much worse if you ask me.
If you have a decent Italian mkt that sells their pizza crusts frozen, that's a neat lunch. I do it every so often. I buy the cheap Dutch Farms brand cheese at the local grocer when the bags of shredded stuff is 99c for 8 oz, and freeze them. Make a pizza with moderately ok cheese, some hot giardiniera, - or whatever, just toss it in the oven, and you're good in a few minutes.
When I work from home, really, tho, I stick to leftovers, sammiches, or take out from the joints around the corner. My office is in a food bereft zone, so when I work from home, I get to actually have a decent beef or other assorted bad grease once in a while.
P.s. - Thanks, Jimswside - I'm gonna have to get some reuben fixins for the house to make them for home lunch. For whatever reason, I never thought of that. That is all kinds of on my list now.
We cannot be friends if you do not know the difference between Mayo and Miracle Whip.