Easy recipe for greek chicken skewers with tzatziki

Name: Easy recipe for greek chicken skewers with tzatziki
Ingredients: 2 lbs boneless skinless chicken breasts,; 3 tablespoons extra-virgin olive oil,; 2 tablespoons plain Greek yogurt,; 2 tablespoons freshly squeezed lemon juice,; 5 cloves of garlic,; 2 tablespoons dried oregano,; 1 teaspoon salt,; 1 teaspoon black pepper,; 1 cup Greek yogurt (for Tzatziki),; 1 cucumber (grated and drained, for Tzatziki),; 2 tablespoons fresh dill (chopped, for Tzatziki),; 1 tablespoon red wine vinegar (for Tzatziki),; 1 clove of garlic (for Tzatziki),; Salt and pepper (to taste, for Tzatziki),