Welcome to the community, we are so happy to have you here with us.
Currently, there is no way to do this within the order summary. I do know that we do plan to support a scan to view barcodes for the entire order in order summaries, but it would not be for each SKU.
You can learn more about order summaries and the customization options currently available here:
That being said you can add SKU barcodes to packing slips. If you want to check that out, I have linked the help center article below.
Hopefully, this helps you out.
-Erin: Your Friendly ShipStation Community Manager