Lanterne and Orecchiette are quite obvious if you ask me. I am not sure Pierogi - I did not even know it was a pasta shape until now, I thought the icon was a slice of a lemon - but I got used to it.

I'd say leave the icons be. Looking at my (Windows) desktop, only 8 out of 24 icons have anything to do with the functionality of the thing they represent (Recycle Bin, This PC, Calculator - all MS, plus Firefox, Firebird, Putty, ImgBurn, Audacity). 4 more are somehow related to the name (CodeBlocks, Qt Creator, Wireshark, Skype). Copernicus' pasta icons fall into this category. The rest are complete fabrications (Adobe Reader, Hugin, HexEdit, Inkscape. LibreOffice, WinSCP, Nokia Suite...).