gāi dáan jái
雞蛋 is chicken egg (雞 is chicken and 蛋 is egg), and 仔 is child or little, so 雞蛋仔 is little chicken eggs.
Egg waffles, so named because the instead of indentations they feature egg-shaped bubbles, are a Hong Kong street food snack dating back to the 1950s.
chocolate egg waffle