Mediterranean Chicken Pita

Name: Mediterranean Chicken Pita
Cuisine: Mediterranean
Ingredients: 1/8 cup (30 ml) olive oil, plus more for brushing; 1/2 medium lemon, juiced; 1 clove garlic; 3/4 teaspoon dried oregano; 1/2 teaspoon dried thyme; 1/8 teaspoon salt; 1/8 teaspoon freshly ground black pepper; 1 pound (455 grams) boneless, skinless chicken breasts; For the yogurt sauce; 1/2 cup (120 grams) plain Greek yogurt, divided; 1/4 large cucumber (75 grams); 1 teaspoon garlic powder; 6 Greek pita flat breads (approximately 170 calories each); 2 Roma tomatoes (120 grams each), sliced; 3/4 large (225 grams) cucumber, sliced; 1/2 medium (55 grams) red onion, minced, if desired; Energizing Tips (optional)