Whisk together all the marinade ingredients in large, shallow dish.
Add the chicken to the marinade and evenly coat; cover and allow to marinade for 30 minutes or overnight in the refrigerator.
Heat a large skillet over medium-high heat. Cook the chicken in the marinade until the chicken is cooked through, about 5-6 minutes each side.
Remove chicken from the pan and allow to rest for 5 minutes.
Toss salad ingredients together and divide between four plates.
Slice the chicken thickly and arrange on salad.
Serve with Tatziki dressing and warmed pita bread