By implementing basic CSS edits to your packing slip template, you can edit the font-style for products with greater than one order quantity.
*Please note that you must be on a Silver or above plan to customize packing slip templates and basic familiarity with CSS coding is recommended.
Head to your Account Settings (the gear icon in the upper right).
Next, select Templates and then Packing Slips from the sidebar on the left.
This will show all packing slips you have created. Find the packing slip you would like to change and click edit. If you haven't created any yet, it'll be best to copy the default template. A window will then display with an HTML editor where you can create your packing slip.
Within the Order Header section, copy and paste the following lines of code to the top:
font-weight: normal !important;
Your Order Header section should look like this now:
Next, click on the Order Items section, find the following line of code:
Then, highlight that line and replace it with the code below:
<td align="center" class="quantity quantity[Quantity]">[Quantity]</td>
Download a sample of the template to view changes, then Save!