We use @Xon 's password tools to lock accounts that have email / password in
haveibeenpwned.com
Naturally some users will open a support ticket to resolve this, as its too technical for many users.
Is there a way to quickly query the HIBP database for the users email address? i.e. can we add a ticket field visible to staff only that shows the HIBP result OR to have a link staff can click on to see the result?
If yes, how can I create this in Tickets?

Have I Been Pwned: Check if your email address has been exposed in a data breach
Have I Been Pwned allows you to check whether your email address has been exposed in a data breach.

Is there a way to quickly query the HIBP database for the users email address? i.e. can we add a ticket field visible to staff only that shows the HIBP result OR to have a link staff can click on to see the result?
If yes, how can I create this in Tickets?