Hi Matt,
The portfolio is a custom post type and the dashboard order can not be changed using the standard WordPress dashboard settings.
This is not related to our theme and more of a broader question in how to re-order custom post types. We do not have any suggestions on how to force the order to be alphabetical as it needs customization and is outside of our support scope.
But there is a plugin that you can use to change the order manually with a drag and drop that you might be interested in:
The plugin above is a third-party plugin and not an official recommendation, we tried to be as helpful as possible.
Thank you.