Like this way:
Use this email body to request a second username change (the Hub UI is commonly described as one-time, then you contact support). Send to [email protected]. (Hugging Face Forums)
Plaintext body:
Hello Hugging Face team,
I’d like to request a username change for my Hugging Face account.
Current username: <current_username>
Requested new username: <new_username>
Account email: <email_used_on_the_account>
Profile link (optional): https://huggingface.co/<current_username>
Reason (short): <reason>
If <new_username> is unavailable, acceptable alternatives: <alt1>, <alt2>
Thank you,
<your_name>