Perhaps, while there might not be an official way to change your Snapchat username, you might be wondering if there is an alternative one? Perhaps an unofficial way to quickly change your Snapchat username.
Unfortunately, aside from either deleting your Snapchat account or creating a new one with a different username, you won’t be able to get the Snapchat account’s username changed for an existing one.
The closest way you can get to changing your name on Snapchat is by changing your display name itself.
Unfortunately, while it would be convenient to know how to change Snapchat username, it is not possible to change a Snapchat username unless you create a new Snapchat account.