Quick lunch ideas with restrictions needed

Beans. There's many options.

Humus on fresh veggies, but maybe you can't eat raw veggies because you can't eat salad. Then humus on crackers.

Bean "salad." Again, you may have to alter this to things you can eat. I soak dried beans, cook them until just done, then add in a bunch of chopped vegetables and some vinegar and oil. It's really good. You could make something similar with cooked vegetables. Cook a big batch and have it for the week or cook a BIGGER batch and vacuum seal/freeze some for another week.

Chickpea stew. You can vary the flavors each time. I like it with lots of ginger and curry. I add canned roasted tomatoes. You can also add something like tofu or tempeh. Freezes OK.

Bean soup. So many kinds. Soak beans, Cook along with some vegetables like carrots, onions, and celery. When tender, remove some of the beans and set aside. Use an immersion blender and puree what's left in the pot. Put the reserved beans back in for some texture. I rotate among black beans, mayocoba beans, and chick peas.

Thick Bean Soup or Dip. Similar to the above, but drain off the cooking water and use it for something else. You can eat this bean soup on crackers or chips.

You can also pre-cook some grains. Quinoa or millet are good options if you want a change from rice but need to avoid gluten. Polenta can be very nice. Even rolled oats will work. Add them to your meals or eat them alongside. Easy to cook in advance, and will last a little while.

Bonus is you can take a bunch of those grains, saute them up with some onion and garlic and any other veggies you want, then add some spiced up scrambled eggs and make a "grain pancake." This will last in the fridge a few days and is easy to transport and eat on the go.

You've got some good ideas from the previous posts.

Just want to say...I'm a teacher and am lucky to have a moment to go to the bathroom...let alone have time to eat a decent meal (ha). I prep Bento-style boxes that I can snack on throughout the day.

My suggestion is to check out all the gluten-free, vegan, etc. products on the shelves these days. There are so many new and interesting products out there.

Leftovers, be purposeful when cooking...always make enough to freeze at least one serving if not two. Casseroles, chili, lasagna, soup, meatloaf all freeze great. 5 out of 7 days a week are Leftovers from that week or pull from the freezer. I have a home daycare and little time to prep lunch for me.