Sweet Potato Pie with Cocoa Crust

Name: Sweet Potato Pie with Cocoa Crust
Ingredients: 1 1/4 cups all-purpose flour (about 5 3/8 ounces), plus more for dusting; 1/3 cup Dutch-process cocoa (about 1 3/8 ounces); 1 tablespoon granulated sugar; 1 1/2 teaspoons kosher salt; 10 tablespoons cold unsalted butter, cut into small (1/4 to 1/2 inch) cubes; 3 to 4 tablespoons ice water; 2 large sweet potatoes, scrubbed (about 1 3/4 pounds); Cooking spray; 1 cup granulated sugar; 2 teaspoons molasses; 1/2 to 1 teaspoon grated orange zest; 3/4 teaspoon ground cinnamon; 1/2 teaspoon kosher salt; 1/4 teaspoon ground cloves; 1/4 teaspoon ground ginger; 1/4 teaspoon ground nutmeg; 1/2 cup evaporated milk; 1/4 cup unsalted butter, melted; 1 teaspoon vanilla extract; 2 large eggs, at room temperature; 3 large egg whites, at room temperature; 3/4 cup granulated sugar; 1/8 teaspoon kosher salt; 1/4 teaspoon vanilla extract; Chocolate pearls and chopped glazed pecans, for garnish