To a bowl, add chicken and seasonings and mix well. Set aside in fridge while preparing the other elements.
Tzatziki
In a small bowl, add greek yogurt, garlic, lemon juice, dill, salt and pepper. Shred the cucumber and place into a paper towel. Squeeze all the liquid out and then add to the yogurt mixture. Mix well. Set aside. This can be done the day before, the longer it sits the more flavorful it becomes.
Greek Salad
Add tomato, cucumber, onion, feta to a bowl. Sprinkle with oregano, olive oil, salt, pepper and red wine vinegar and mix.
Onto a pita, add the ground chicken making sure to cover the entire pita in a thin layer about 1/2 inch thick.
Cooking the Souvlaki
Oil a griddle or skillet, place the pita, chicken side down onto a griddle or into a cast iron skillet and cook on medium until full cooked. Then flip and warm the pita on the other side.