CONTEXT:
In the pihole GUI, under Settings > DNS, there is this instruction WRT DNSSEC: "Use Google, Cloudflare, DNS.WATCH, Quad9, or another DNS server which supports DNSSEC when activating DNSSEC."
FEATURE REQUEST:
Now that OpenDNS supports DNSSEC (per https://support.opendns.com/hc/en-us/articles/360039659971-DNSSEC-General-Availability) and OpenDNS is featured prominently in the GUI already, the in-GUI instruction should state something like: "Use Google, OpenDNS, Cloudflare, DNS.WATCH, Quad9, or another DNS server which supports DNSSEC when activating DNSSEC."
VALIDATION:
I've successfully tested this myself, as per the attached screenshot, using Pi-hole's recommended test at https://dnssec.vs.uni-due.de/