How can I renew my expired Italian passport in Florida? I was born in England, but lived in US for 42 yrs.?

I've been living is the US for 42 years. I was born in England, but have an expired Italian passport, since that's where my parents were born. How can I renew my expired italian passport from FL....can it be done online? Or should I get an English passport since that's where I was born? Which is easier to do? Thanks!