Interesting. I've noticed some changes in the voices post Chapter 3. The inquisitor is definitely different, more gravelly, more drawn out. However, I don't think it is a different voice actor.
But honestly, a voice actor is simulating a voice as much as portraying a character. If they aren't getting good direction and a lot of time is elapsing between recordings there can be significant differences despite the talent remaining the same.
You guys do know that voice actors aren't like the crop we see in the latest pixar movie? You know, where Tom Hanks plays a character and uses that Tom Hanks voice? Those aren't voice actors, Billy West
is a voice actor.