I know exactly this feeling. I used to be happy and make jokes about everything, seems like my personality vanished. My mind used to have lots of positive thoughts and informations, hanging out and having conversations with people was one of my favorite things in this life.
Then my episode and medication happened. Now I struggle to have conversations even with my closest friends. It's so hard to be a talkative person when your mind can't connect with anything and everything seems so dull, nothing holds your interest except your condition.
I feel like I am able to talk only about this disease, has been my obsession since I started this zombie state after starting antipsychotics. But I think things starts to get better as long the anhedonia subside. Then will be easy to get interested and excited about others things in life - becoming a better company. It's temporary!