Assuming there's a Trader Joe's nearby, the canned Chicken Chili is excellent--one can with onions
and cheese is a hearty lunch for one, and a light lunch with a salad for two.
Their frozen burritos are good, particularly when doused with their bottled enchilada sauce. (True Mexicans will forgive me for mixing my antojitos)
They have wonderful pizzas and such in the appetizer section, my favorite an Alsatian ham and cheese tart.
In the meat section you can find pre-seasoned fish fillets, chicken breasts and pork tenderloins. Just cook 'em up and have some salad or one of their microwavable veggie packs.
No, I am not the "Joe" in "Trader Joe's" and I do not receive payment for promoting their products.