Stephen Ray Perry (born Stephen Ray Pereira on January 22, 1949) is an American singer and songwriter best known as the lead vocalist of the rock band Journey from 1978-1987 and 1995-1998.

from steveperryfans.com:

Food: Was a vegetarian; currently eats fish and chicken

- this was confirmed in a 2005 interview.

from Rockline! Magazine Spotlights Journey's Steve Perry!, Circa 1981

Steve Perry:
I usually stay at home and listen to music. Something like that. I cook. I'm a vegetarian now and I enjoy experimenting with new combinations of vegetables and grains and things.
Rockline!
Who turned you on to the vegetarian life-style?
Steve Perry:
I got sick about a year and a half ago on a hamburger and that's what stared it all. Now I feel better, I don't catch as many colds as I used to,  and I've got even more energy than I had before - and I'm hyper to start with!
Rockline!
What is your specialty in the kitchen?
Steve Perry:
I'm real good with Mexican, food and things like cheese enchiladas are what I'm really good at.