Theming paragraph fields from entity reference in view
I had a situation where i had to theme entity reference fields that were used in a view. Have you tried any of these?


Setup a view mode for the Paragraph type, set view Format to Show Content where the view mode was set to the one you needed, and then i themed the view mode
Use a hook_preprocess_hook to get all the results from a View and then store them in the $variables['fields'] and then you modify the twig template for the view


This relies on Views Template Files and Debugging Twig templates