Lentil and Chicken Soup with Sweet Potatoes and Escarole

Name: Lentil and Chicken Soup with Sweet Potatoes and Escarole
Ingredients: 1 cooked chicken carcass (from 1 store-bought rotisserie chicken or homemade roast chicken); 1 lb. sweet potatoes (about 2 medium), peeled, cut into 1 pieces; 3/4 cup French lentils (about 5 oz.), rinsed; 1 tsp. kosher salt, plus more; 2 Tbsp. extra-virgin olive oil; 10 celery stalks, sliced on the bias into 1/4 slices; 6 garlic cloves, thinly sliced; 1 1/2 cups shredded cooked chicken (from 1/2 of a store-bought rotisserie chicken or homemade roast chicken); 1/2 head escarole, cut into bite-size pieces; 1/2 cup finely chopped dill; 2 Tbsp. fresh lemon juice