Your last line is a little confusing, but if this is what you're trying to describe:
-------- --------- | |-HDMI port---------------(HDMI cable)------------|monitor 1| | laptop | ========= | |-MiniDP---(MiniDP/HDMI adapter)---(HDMI cable)---|monitor 2| -------- ---------
Then, yes, that should work.
This guy tried doing the same thing (but with different monitors) and he got it to work. I can't be sure, however, that he's using the same model Zenbook Pro that you have.