Farscape was a great show!
Scorpius gets a lot more interesting, so just stick through with it.
Chiana.. Sadly does not. If you find her annoying now, then you will definitely find her annoying later. Don't get me wrong, she has her moments, and is not all bad, but for me, she was the worst character of Farscape. When you get to season 2, just skip through the third episode "Taking the stone". It's one of the worst episodes of Farscape (and also heavily focused on Chiana)