Pastina Soup

Name: Pastina Soup
Cook time: 1 h 20 min
Total time: 1 h 20 min
Cuisine: European, Italian, Mediterranean
Ingredients: 1 TBSP olive oil; 1 medium carrot, diced; 1 rib of celery, diced; 1 medium yellow onion, diced; 2 medium garlic cloves, minced; 1 1/2 pounds bone-in chicken thighs, skin removed; 8 cups water; 2-inch piece of Parmesan rind; salt & freshly ground black pepper; 8 ounces uncooked acini di pepe pasta (or other small pasta); freshly grated Parmesan cheese for serving