How do say in Creole when you meet a person for the 1. time (How do you do? - anchante?)

Yes, Anchante translates the idiom How do you do? or Nice to meet you.
and you also have the followings:

It's a pleasure.
Se yon plezi.

It was a pleasure to make your acquaintance.
Se te yon plezi pou'm rekonèt ou.

I'm delighted to meet you.
Mwen kontan rekonèt ou.
Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words