When I first found Cronometer and started using it daily, I did what every developer does and looked at what kind of data exists out there if I wanted to build my own app. The free data from the FDA was pretty bad/limited with massive holes and it would have taken a lot of effort to clean up.
Of course, Cronometer's best data comes from https://www.ncc.umn.edu/food-and-nutrient-database/.
Maybe you can sample your data and validate it against NCC's data via Cronometer to see if your LLM approach has legs when it comes to micronutrients and amino acids. And note that you have AIgen data that NCC's hand-measured database doesn't even have reliably, like choline, which seems like a red flag.