That's healthy and all, and probably good for your overall diet, but for the 35 or so years I worked on-site, I always took a lunch break; usually with a group of friends. And it tended to be closer to an hour (hour-and-a-half in the early days), because we'd combine lunch with a walk.
Yes. Working from home, we have to plan for lunches, so it's part of the groceries. We get sliced turkey from the deli, and I make a wrap or sandwich, usually with provolone, lettuce, and banana peppers or half an avocado from Mrs. Scotch's breakfast. Occasionally, we have leftover bacon from weekend brunch. Lunch usually includes a kosher pickle and some chips. Sometimes, in the summer, we have leftover sides like potato/pasta salad, and I have that with the sandwich. And we might also get genoa salami to go with the turkey.
If we had salmon for dinner the night before, I'll have that on a salad instead of the sandwich. The same goes for any leftovers we have an abundance of. My breakfast is usually yogurt with granola, or hot/cold cereal with fruit. Occasionally, Mrs. Scotch makes a hot breakfast. And around Passover, we have a lot of fried matzoh (like scrambled eggs).
Sometimes in the summer, I'll take a wrap to the beach. And on the weekends, it's whatever fits our schedule.