Hi @gmcoffi,
This is not possible directly within the plugin itself, The Icon Block simply allows you to add an icon wherever a block can be added. That said, if you are using a block-based theme that supports Full Site Editing, such as the new Twenty Twenty-Two theme, this is possible within the Site Editor where you can edit the post template directly.
This was such a great support question, I made a little video about how to do it and posted on Twitter. Essentially you can place the Icon block and the Post Title block inside of a Row block and you’re good to go. ??
All of this functionality is very new to WordPress, so your current theme may not support it yet.
I hope this was helpful, let me know if I can answer any further questions.
Best,
Nick