Thanks to Bob W. and Sarah and other Chwowhounds who recommended Rocky & Carlo's in Chalmette. I've never eaten a smaller percentage of food ordered in a restaurant I liked. Two of us shared "small" macaroni and cheese, oyster po' boy, wop salad, and baked eggplant, and an order of onion rings (the only thing we ordered that didn't come in two sizes).
The main restaurant is one giant room, with a cafeteria line, a small steam table, and a large, open kitchen/prep area. The eight or so ladies behind the counter, most with an attitude, whip into action as soon as you order. When we order onion rings, for example, a young woman disappears into the supply area and brings out two peeled whole onions, and then goes to the hand slicer to process the onions, and then goes to the large mixing bowl and kneads the flour into the onions for a minute or so. I can see why she wasn't thrilled when we ordered them.
My favorites were the eggplant (which looked like stuffing) and the famed macaroni and cheese, less rich than most modern treatments, and featuring the longest macaroni I've ever seen with mac & cheese.
The tomato gravy should better be called the multipurpose sauce. It was good with the mac and cheese, the eggplant, the buttered french bread (which was the best bread I've encountered on this trip so far), and the the onion rings (which for all their homeliness, were a disappointment -- too much breading to onions, I'm afraid).
Our main waitress and spiritual advisor was Catherine, who has worked at Rocky & Carlo's for 12 years, was a doll and took great pride in the establishment. As Sarah said in her post, don't go to R&C's thinking that all the food will be impeccable. But it will make you feel good about being in a city where a restaurant like this can thrive.
And for those who abhor wasting food, please remember that all the small portions are as large as entrees anywhere else.