@danjones000 zero I think could mean a few things, like that the respondent is WaCKy, or that they don't eat carbs.
I've had tridillas before - tortilla, cheese, tortilla, cheese, tortilla - but they're kind of a pain and the inner tortilla gets a little mushy.
I don't think I've ever tried higher-order quesadillas also their existence is posited by Mexican cuisine theoreticians.