Near me on Rt1 in Iselin is Jose Tejas. They have the best Tex/Mex I've had anywhere and at great prices. They have huge drinks and endless nachos with really good salsa. The only negative I can think of is that they get crowded at peak times so get there early. The best pizza is without a doubt Brunos Pizza on Morris Ave in Elizabeth. I had pizza there since I was a kid and love it. Bruno is a great guy and goes out of his way to make your visit a good time.
Jose Tejas (look for the giant neon EAT sign)
700 US Highway 1 North
Iselin, NJ 08830
500 Morris Avenue
Elizabeth, NJ 07208-1942