I work in Pasadena.
or at least... I used to, up until yesterday lol.
so as a parting gift, here's a few placed I would like to recommend.
Rick's Drive In
http://www.yelp.com/biz/ricks-drive-in-pasadena
get the Spuderito, basically french fries, cheese, n hot sauce wrapped in a tortilla. shyt is so good!!!
Big Mama's & Papa's Pizzeria
http://www.yelp.com/biz/big-mamas-and-papas-pizzeria-pasadena
they sell this thing called Khachapouri which is a boat shaped cheese pizza with 2 eggs cracked atop it. Everyone loved pizza so definitely check this out!!
Lee's Hoagie House
http://www.yelp.com/biz/lees-hoagie-house-pasadena
I discovered this place thanks to Groupon. The reviews all hyped up the chicken hoagie, so I got that, but my groupon was for $10 so I also picked up one of their italian subs (there are 4 different versions, but the dood working there told me they're all the same just that each one has more meat in it). The chicken sandwich was real good, but omg the Italian one was incredible. It's basically an italian cold cut, but they put this magic chili paste in it that makes it taste like heaven!!
Dog Haus
http://www.yelp.com/biz/dog-haus-pasadena
http://doghausdogs.com/
lastly this place I wanna mention. basically, gourmet hot dog concoctions, with buns made out of king's hawaiian bread. No pics, but definitely check out their menu on their site coz you will probably see something that u like. The Mediterranean place next door is good too.
I can prolly think of more places in the area, but for now I think this is good.