Chakri is the Gujarati name for an extruded snack made from rice flour, and available widely at South Asian groceries stores. Sometimes it contains urad (dal) flour, as well. The snack was supposedly invented in Tamil Nadu, in the small town of Manapparai, where it’s known as muruku or murukku.
While the snack looks like it might be sweet, it’s savory instead, with a nice firm crunch, and an ensuing mild burn. It’s also lightly flavored with cumin seed. Eat one, and you’ll want just one more. Eat two and you’re addicted.
According to Wikipedia, the snack is particularly popular among the Indian community in Fiji, who probably need a good wholesome snack to cheer them up, after having all their water stolen.