The few things I would point out, which aren't so much WordPress issues, but are how this WordPress installation is configured, are:

1. No description tag, that is in the 'Settings -> General' page
2. Well over 100 links on the home page, mostly because of the 'Blog Archive', are people actually clicking on those items?
3. No good H1 tag, the one that was created by the theme "Athletic Foodie" has been commented out and the current (second) one is, "How about a 2,000-year-old Salad? Kale!!", a poor descriptor of the page.
4. Dangling links, some of the images are linked to themselves, that is set on the post or page they are created on.
5. The page names 'slugs' don't usually match their titles, ex, Fiber: health benefits for athletes...., would be: 'fiber-health-benefits-athletes', etc.
6. From a user standpoint, way too much text, the full posts could be reduced by using excerpts and linking to a separate page, increasing load time, and most likely page views. Would you scroll all the way to the bottom? What if it was half or a quarter this size?
7. The 2 main items "Recipes" & "Videos" go offsite? And they are follow links! What the!

Cheers.