Easy Chicken Gyro
1 (16 ounce) container Greek yogurt 1 cucumber, peeled and coarsely chopped 1 red onion, thinly sliced 1 tablespoon dried oregano 1 tablespoon extra-virgin olive oil 1 teaspoon distilled white vinegar 1 teaspoon lemon juice 1 teaspoon olive oil 1 tomato, diced 1 ¼ pounds skinless, boneless chicken breast … 1 ½ teaspoons dried dill weed 2 cloves garlic, minced 2 tablespoons extra-virgin olive oil 2 teaspoons red wine vinegar 4 cloves garlic, minced 6 (6 inch) pita bread rounds lemon, juiced salt and ground black pepper to taste ½ head iceberg lettuce, chopped