If you ever find yourself in Downtown Fullerton (or DTF as some locals call it), do yourself a delicious favor and go to Kentro Greek Kitchen. The atmosphere in the area can be relatively bro-y and full of college kids at night ... so bypass the bars and settle yourself at Kentro instead. The atmosphere is relaxing and informal: you order at the cashier, pay and take your number to any table you wish and seat yourself. Food will be brought to you and if you order drinks, they will come refill them.
I came for lunch with a friend and we each ordered our own dishes, but ended up sampling off each other's plates. The picture up top are the patates lemonates - roasted lemon potatoes. They are delish.
psari tiganito - panfried fish, kalamboki (roasted corn, kefalotiri butter)
paithakia - lamb chops, tatziki, briami (baked seasonal vegetables, feta)
The portions are generous for the price and everything is fresh and well seasoned. I could not stop eating the corn that came with the fish, much to my friend's dismay. We were running on a tighter schedule than usual, but I'd definitely want to round up the meal with some baklava or Greek beignets and a nice latte. Beer and wine is also served, so this could be a nice casual date night restaurant as well - for those times where you want to be low key but also make an amazing impression.
Kentro Greek Kitchen
100 S Harbor Blvd, Suite A, Fullerton, CA 92832