Although Green Day has been playing this song live using Eb tuning recently, the album version of Nice Guys Finish Last is played using standard E tuning (as is the rest of the Nimrod album). The chords in parentheses are not actually played, but you can if you want to! Might be a good idea if you don’t have a bass to back you up and are unable to sing without the comfort of something drowning you out.

Green Day - Nice Guys Finish Last - chords and lyrics

Here is a live video of the band playing Nice Guys Finish Last in Toronto, Circa 2001. Back when E tuning was still standard for live renditions of Nimrod songs: