There was a mention on the SF board.
It seems like it is a relatively new Mexican snack (maybe a decade old)
This good article about tostilocos (crazy chips) crossing the border ...
"Essentially, they're made by cutting a bag of snack chips along one side and loading it up with a variety of fresh veggies, cheese and condiments.
In Mexico, the classic versions usually include cabbage, cucumber, fresh-squeezed lime juice, hot sauce, peanuts and pickled pig skin."
Crazy for Tostilocos: Kids get their veggies with popular snack
A few more photos
A photo by a missionary's wife in Mexico
A recipe to make your own
The veggie version is called Verdura (no pork skins)
It seems the chips of choice are tostitos corn chips (preferably salsa verde) with Ruffles as another favored option (205 gram bag the standard).
The cunlinary background to this "in addition to offering different flavor combinations with every bite, the corn chips absorb the lime juice, salsa and other liquids so the bag's contents don't turn into a soupy mess:
It seems there is a regional Sinaloan version that is close to nachos.
So how do you like your tostilocos ... and where do you get them?