That sounds too much like a date for it not to be a date. If it is happening in the future, good luck, because you're going out on a date. If it has already happened, congratulations because you just went out on a date.
Guys rarely go out with girls to "decent food places" out of pity or to be polite. They go to such places because they're interested. So do treat this thing as a date. If he says he wants to do it again, assume that it'll be for a second date.
Good luck, and don't overthink it.