In a bowl, mix yogurt, lemon juice, garlic, cumin, smoked paprika, coriander, salt, and pepper.
Add the sliced chicken and coat well with the marinade.
Prepare the tzatziki by mixing yogurt, cucumber, garlic, dill, lemon juice, and salt. Refrigerate.
Combine flour and yogurt to form a dough. Knead lightly and roll into a flat circle.
Cook the flatbread in a hot pan for about 2 minutes per side.
Cook the marinated chicken using your preferred method until fully cooked.
Spread tzatziki on the flatbread.
Add tomato, onion, cooked chicken, and more sauce.
Sprinkle parsley on top, wrap, and serve.