Yes there is if create a new config file eg:
sudo nano /etc/dnsmasq.d/99-my-settings.conf
With below content:
server=/<DOMAIN_NAME>/1.1.1.2
server=/<DOMAIN_NAME>/1.0.0.2
Check syntax:
pihole-FTL --test
And apply:
pihole restartdns
If replace <DOMAIN_NAME> above with the domain that needs to be forwarded to those less restrictive DNS servers (1.1.1.2 & 1.0.0.2), this will do the trick and it will also cover any sub domains.
But you'll have to figure out which domain (or more) exactly.
Below tools might help with that: