Why would choxorn be protected on night one though. That doesn't make any sense.

Chox shouldn't be the n1 doc target. And the first inventor gift would have been the gun, delivered too late to affect N1.

Unless choxorn is a bulletproof, the only thing that makes sense is that Slaan is hinting that he shot choxorn, when he wasn't protected, and was actually shooting elsewhere.

Which you don't lie about if you're town.