Tonight I made a potato tortilla with chapata, and it was good and warm and filling. The next time I make it I'll use my mandoline to slice the potatoes and onions so that they are thinner and cook more quickly and evenly, but I think that's my only suggestion. It's straightforward, cheap peasant food, which is always my favorite -- potatoes, tomatoes, onions, eggs, bread, olive oil, salt, milk. Yay.
Bob loved it. Claire liked it okay, too. (She investigated it first, but it passed.)