There is a similar question here as well as elsewhere.
However my situation is somewhat different, so please read for marking it as duplicate. The questions I've seen asked has been about giving a gift to a supervisor after completing your PhD, and whether that would be innapropriate before/after defending your thesis.
In my case, I had a lot of difficulty finding someone willing to support my application (as I'm doing it in a completely foreign country). I'm very grateful to my supervisor for being willing to take me on and supporting my application.
I was thinking of bringing him some chocolate from my country (which is very popular here and abroad) as a small thank you gift.
Would this be weird/inappropriate?