This word is from the Chinese kwa pao (剮包).
gruel, rice porridge, congee
from the Spanish galletas
The word galyetas is technically a general term for a type of biscuit, cracker or cookie.
For most Filipinos though, the first thing that pops to mind upon hearing the word galyetas is the “crackers” more popularly called Egg Cracklets.
Popular commercial brands include La Pacita and Marky’s.