Tilapia with Garlic Edamame

Name: Tilapia with Garlic Edamame
Ingredients: Two 4-ounce tilapia fillets; Kosher or sea salt, to taste; Fresh cracked black pepper, to taste; 2 tablespoons unsalted butter, divided; 2 cloves garlic, minced; 2 tablespoons sliced shallots; 1 cup shelled edamame, thawed; 1 tablespoon fish sauce; 1 teaspoon garlic chili sauce