I started over and went one by one to make sure it wasn't something on my end causing the problem with the melon grass plot. Every single one of them works and gives a proper food value. Something to note would be to use the 'Refresh settlement plots' in the 'city manager holotape' OR go around with the 'Immersion Breaker Breaker' after using the 'Architect's T-Square' any time an existing plot is changed to something else.
Obviously this should probably be noted on all the author's mods if it isn't included already in their FAQs but that is just my opinion. Will probably prevent false bugs from being reported.
So I guess I can refer you back to my original post from earlier
All is good to go, no bugs or issues that I could find on my end. Looked for anything I could with AND without other mods active.