Currently Zotero does not export multi-word last names correctly in BibTex, which makes manual corrections necessary for any BibTex files. For example, the last names "Le Blanc" and "Marnard Smith" are translated as "Blanc, L." and "Smith, M." by Latex.

Any easy way to fix this would be for Zotero to output names as:

author={lastname, firstname}

instead of:

author={firstname lastname}

For example, instead of:

author = {John Maynard Smith and George R. Price}

The bibTex document should read:

author = {Maynard Smith, John and Price, George R.}