Hi Chris !

So true indeed :)
Such an interesting question (as always!), as there is indeed a nuance between "the more chocolate you eat" and "the more you eat chocolate". I actually had to think about it before finding how you would express this same nuance in French, and it's frustratingly subtle: 

My explanation would be that in the first instance, you compare the whole statement "manger du chocolat", whereas in the second one, the comparison focusses on the noun "chocolat"-> "plus... de chocolat". Note that you would never say "plus de chocolat tu manges" for syntax reasons, and there you are :)

Therefore, you were correct in the fact the English in the question needed changing, which has been done :)

Thanks again for your question, I hope that's helpful!

Bonne journée !