I've eaten a Pete's off and on over the years and always thought they had pretty good food. If you're looking for traditional "fish and chips", they way they serve it back East, you might be disappointed; however, if you're open to trying something new, you might be pleasantly surprised.
The real action at Pete's is in the fish and shrimp. I'm not a big fan of their fries because I like more McDonald's like crispy fry. The key to their success has got to be the sauce, which I think is the best in the business.
One last thing, if you go to Pete's understand that Pete likes cash and doesn't take credit cards. Yes, it's a pain, but the non-greasy food is going to be worth the hassle.