Hey there,
Thanks for reaching out to us.
In relation to your question here, yes this is possible. You will need to navigate to your WordPress dashboard under Users > Profile and within your user profile, add a nickname of your preference within the “Nickname” section.
Once the above is carried out, still within the user profile section, select the Nickname you created within the “Display name publicly as” field.
I hope this information helps. Should you have any questions, please do let us know.
Best Regards,
John