As you've gathered, this restaurant serves chow from both Guatemala and its larger neighbor to the west. Often the differences between the two cuisines can seem very slender, and I didn't attempt to parse a distinction between chicharrones Chapines and chicharrones Mexicanos.
Though they can be made from many different animal proteins, "chicharrones" usually means deep-fried pork rinds. Seasonings aside, some recipes simply call for broad swaths of skin; many of these two-bite nuggets, to their great credit, also included a bit of pork meat.
It was my dining buddy who procured these homemade chicharrones from a basket near the register ($5 for a fat zip-sealed bag that might have weighed a pound). After enjoying a few himself, he kindly (or shrewdly) handed off the bag into my custody. Clearly he already know full well what happens to your willpower when you keep a bag of chicharrones around the house.
22 Ave. O (West 10th-West 11th Sts.), Bensonhurst, Brooklyn