Like the others posted: the ping is going out, but ZyXEL isn't responding at all. Since this is a capture, it has nothing to do with the firewall or routes, as it's in the L2 interface level, nothing has been done to the packets yet.
I think you might have a problem on the ZyXEL side, not on the pfSense side.
Your trace is correct at least, so now you know how to capture packets, which is a great tool with network diagnostics! Beware though, packet captures are not always useful when for example you have a firewall or routing problem since firewalling and routing happen after the packets leave the interface and to in to processing software like pf.