The RSS feeds on my site don't seem to functioning properly. I recently updated my theme to a new theme I developed and ever since that point the RSS feeds don't display all of my site's content properly. My rss feed only displays the Title with link and published date. No featured image or excerpt/body copy.
I have the following in my functions.php
add_theme_support( 'automatic-feed-links' );
What are some other areas I should investigate on my site?