Combine the garlic, lemon juice, red wine vinegar, olive oil, yogurt, oregano, and salt and pepper to taste in a medium bowl. Whisk together until mixed well.
Pour into a large ziploc bag and add the chicken. Seal and marinate at least 1 hour or overnight.
Serve with tomatoes, sliced red onion, feta cheese, and tzatziki sauce in a pita or flour tortilla.
Notes
Tzatziki Sauce
16 oz. plain yogurt (not nonfat, if possible)
1/2 cucumber, peeled and seeded
2-3 cloves garlic, smashed or diced
1 tsp. white wine vinegar
Salt and pepper to taste
Squeeze of fresh lemon juice
Drizzle of olive oil
Shred the cucumber. Wrap in paper towels and squeeze to remove as much water as possible. Mix together the yogurt, cucumber, garlic, white wine vinegar, salt and pepper to taste, and lemon juice. Drizzle lightly with olive oil.
Refrigerate for at least 30 minutes before serving to allow the flavors to develop.