Yes the portions are big and they have a diverse menu.
I've had their chicken souvlaki dinner and chicken on a pita, and their meat is very dry. I noticed that when I looked over the counter, they had already cooked the meats, and they just reheat it on the grill, that's why it doesn't take a long time.
People have better standards for yourself, you're so easily fooled by the portions they throw at you you can't realise that the quality is shit, and it's not like it's dirt cheap either. The pita sandwich was $8+tax, and that's how much it'll cost at a lot of places.
Also, the chicken souvlaki, is just grilled chicken breast...it's not souvlaki style...you can't add tzatziki and say it's Greek.
DON'T PRECOOK YOUR MEAT AND YOU'LL BE GREAT!