Your DHCP server is handing out two DNS servers, one is the Pi-hole and the other is 8.8.8.8. Clients will use 8.8.8.8 and bypass Pi-hole.
It does look like at least on client is trying to use Pi-hole Jan 31 22:41:23 dnsmasq[1122]: query[A] dns.google from 192.168.1.80
and 192.168.1.144 has made a query that was blocked by Pi-hole.