Do anda think the animasi is lebih different than sebelumnya seasons?

I don't know why but the animasi looks different than sebelumnya seasons. Like in the episode "The Knights" Penny looked completely different than how she looks in other seasons. The shows still good, it's just that i don't know why they changed the animasi in the show. So what do anda guys think.... Do anda still like the animasi atau not?