Greek Chicken Sheet Pan Dinner with Green Beans and Feta

Name: Greek Chicken Sheet Pan Dinner with Green Beans and Feta
Ingredients: 1 pound baby Dutch yellow potatoes; 1 pound green beans; 1 15-ounce can petite diced tomatoes; 2 pounds boneless, skinless chicken breasts; 2 1/2 lemons (1 1/2 juiced, and 1 sliced); 8 cloves garlic (4 minced, and 4 sliced); 4 ounces feta cheese (sheep or goat's milk preferred!); 1 large onion; 2 teaspoons salt and pepper; 2 tablespoons fresh oregano (or 1 1/2 teaspoons dried); 2 tablespoons fresh parsley (plus more for garnish); 12 pitted Kalamata olives