Kopitiam french toast looks like a light breakfast but it is a sugar and fat delivery system. You start with bread, dip it in egg, fry it in butter, then add a thick layer of kaya (which is coconut, egg and sugar) and often a cold slab of butter and a drizzle of condensed milk on top. Every one of those add ons is fat or sugar stacked on the bread.
It is a proper treat breakfast, not an everyday one. Two slices plus a teh tarik is pushing 500 calories before you have done anything with your morning. Enjoy it, just do not pretend it is the healthy option on the menu.