chicken gyros

4 large chicken breasts-cut in half crosswise
1/2 tsp oregano
1/2 tsp kosher salt
1/2 tsp black pepper
finely grated zest from a med to lg lemon
olive oil
tomatoes-sliced
lettuce leaves
pita bread

(i like to buy the fresh thick pita from a specialty store, but this works with the grocery store kind too!)
In a bowl, mix the salt, pepper, oregano and lemon zest.  Rub the chicken with olive oil and the spice mixture, then begin stacking on the skewer. You may need to cut the top of the skewer off to make it fit in your oven.  Place in a 400 oven and let it cook until it is done use a meat thermometer.  Let the chicken cool a bit and then begin slicing on the vertical, just like you see them do at your local donner kebab place.  Fill each pita with chicken, lettuce, tomato, roasted potato and tzatziki sauce. Fold and enjoy!
Tzatziki Sauce
1 small container plain non-fat yogurt
1/2 cucumber--halved, peeled, seeded and sliced paper thin
1/4 tsp garlic powder
1/4 small onion--sliced paper thin
salt and pepper to taste
mix all ingredients together and let sit in the refrigerator at least an hour, but ideally overnight.

Roasted Potato Wedges
1 large russet potato--cleaned and cut into wedges
olive oil
salt
toss the potatoes in the olive oil and sprinkle with salt.  place in a 400 oven to bake until nicely browned.  check for doneness at 30 minutes