@ryanmeighan - Sorry to see you didn't get an answer to this sooner.
The reason you're seeing 'https://secureservercdn.net' is because the CDN is serving those assets. While your site's permalinks/pathways should be explicit to your domain, the site assets to compose the site do not, and it will not impact your SEO. If anything it typically helps deliver the site faster to customers.
The only time it would is if there was a CDN configuration issue causing errors on the site.
