Chicken Stew With A Secret Weapon

Name: Chicken Stew With A Secret Weapon
Ingredients: 3 large bone-in, skin-on chicken breasts; olive oil; Salt; Freshly ground black pepper; 10 - 12 sprigs Fresh Thyme; 2 quart chicken broth, (I used Imagine brand Organic Free Range), plus a bit more broth or water for thinning if needed); 3 large carrots, cut into rounds roughly ¼-inch thick; 3 medium leeks, trimmed, halved lengthwise, rinsed thoroughly, and cut into rough 1-inch pieces; 1 x Parmigiano Reggiano rind, roughly 2 inches square; 1/3 cup tiny soup pasta (I used Ronzoni brand acini pepe)