Wantan mee is quietly one of the better choices when you are trying to be good but still want noodles. The dry version is tossed in a bit of sauce and oil, not drowned and fried like char kuey teow. The char siu and wantan give you real protein, around 25g, for a moderate calorie count. That protein to calorie ratio beats most hawker plates.
Two things to watch. The char siu can be fatty and sweet, and the fried wantan (as opposed to soup wantan) adds oil. But compared to CKT or mee goreng, this is a smart order. If a stall does a soup version, that is lighter again.