Chicken and Asparagus Crepes

Name: Chicken and Asparagus Crepes
Ingredients: 3 tablespoons unsalted butter, plus more for the dish; 2 1/2 cups shredded rotisserie chicken; 1 1/2 cups ricotta cheese; 3/4 cup grated parmesan cheese, plus more for serving; 1/4 cup chopped fresh herbs (such as parsley, dill, chives or mint); Kosher salt and freshly ground pepper; 8 store-bought crepes (about 9 inches each); 1 shallot, sliced; 1/2 pound asparagus, trimmed and cut into pieces; 3/4 cup low-sodium chicken broth; 1 teaspoon finely grated lemon zest