Easy Chicken Gyro

Name: Easy Chicken Gyro
Ingredients: 1 (16 ounce) container Greek yogurt; 1 medium cucumber, peeled and coarsely chopped; 2 cloves garlic, minced; 1 tablespoon extra-virgin olive oil; 1.5 teaspoons dried dill weed; 1 teaspoon distilled white vinegar; 1 teaspoon lemon juice; salt and ground black pepper to taste; 4 cloves garlic, minced; 1 medium lemon, juiced; 2 tablespoons extra-virgin olive oil; 1 tablespoon dried oregano; 2 teaspoons red wine vinegar; 1.25 pounds skinless, boneless chicken breast halves - cut into strips; 6 (6 inch) pita bread rounds; 1 medium tomato, diced; 1 medium red onion, thinly sliced; 0.5 head iceberg lettuce, chopped