I would like to be able to each item in a list in my form view dynamically so that it will work with 1 or with many items. I have a feeling that the t-foreach is my best bet but I am not really sure how to use it in this instance.

For a single item I would do it as
<field name="item_name" widget="pdf_viewer" />

But with a list I am not trying to display a specific field I am trying to display the data inside a list.

<t t-foreach="list_name" t-as="item">
  <field name="item" widget="pdf_viewer" />
</ t>

Would I be able to do something along these lines?