Chicken and Rice Paprikash Casserole

Name: Chicken and Rice Paprikash Casserole
Ingredients: 2 pounds bone-in, skinless chicken thighs; Kosher salt and freshly ground black pepper; 1 teaspoon extra-virgin olive oil; 5 cloves garlic, finely chopped; 2 large onions, finely chopped; 2 large red bell peppers, finely chopped; 1 tablespoon sweet Hungarian paprika; 1 teaspoon hot Hungarian paprika or 1/4 teaspoon cayenne pepper; 2 tablespoons tomato paste; 2 cups low-sodium chicken broth; 3 cups frozen brown rice, thawed; 2 tablespoons chopped fresh flat-leaf parsley; 6 tablespoons reduced-fat sour cream