Lo bak go sounds healthy because it has radish in the name bro, but do not be fooled. The base is rice flour, not vegetable. The radish is shredded in for flavour and texture, but the bulk is starch. Then they pan-fry it in oil so the outside goes golden and crispy, and that oil is calories you cannot see.
A plate of 3 is around 300 calories, and most people order it crispy because that is the good version. If you want it lighter you can ask for it steamed rather than pan-fried, but honestly the crispy edge is half the reason to eat it. Just know what you are getting and count it as a carb-and-oil dish, not a veg.