Peach Cobbler Pancakes

Name: Peach Cobbler Pancakes
Ingredients: 1 2/3 cups all-purpose flour (see Cook's Note); 1/4 cup cornstarch; 1/4 cup confectioners' sugar; 1 tablespoon baking powder; 1/4 teaspoon baking soda; 1/2 teaspoon kosher salt; 1 1/4 cups milk; 2 large eggs; 3 tablespoons unsalted butter, melted, plus more for pan; 1/2 teaspoon almond extract; 2 ripe peaches, halved and pitted, each half cut into 10 thin slices; 1/4 cup packed light brown sugar; 1/4 cup toasted sliced almonds; Confectioners' sugar, maple syrup or whipped cream for serving