potatoes aren't a grain. i do just fine eating them every once in a while. i have rice with sushi once a month or so, but i was never a rice-eater really.
something like nachos? worse even than the grain is the gross industrial oil in/on them. in a former life, i could chow an entire bag of tortilla chips. i never even think about having them anymore. when i see them on a table in some bar it looks and smells utterly gross, lol.
i don't know how long you've been at this, but your tastebuds change.
i'd be a vegetarian if bacon grew on trees.