Semenyo struck twice as the 3-1 win took the Cherries to second-place in the Premier League table.
He said afterwards: "Yeah, I'd like to think so (I am in career best form). I thank God massively. He's played a massive part in my life and I'm just reaping the rewards now. So yeah, I thank him always."
On the summer signings adapting well, Semenyo continued: "To be honest I'm happy with the signings that we've got. Of course sad with the signings that have left but we've adapted really well.
"The guys that have come in are great and have adapted really well with our system, so we need to keep building with them and as a group. It's been fantastic since the start of pre-season we just need to keep building."
On if there's any surprise internally about their form, he added: "I don't think so. Again everyone wants to work hard for each other. We just need to keep pushing and we'll see what happens."