Chocolate and Coconut Cream Pie

Name: Chocolate and Coconut Cream Pie
Ingredients: 9 graham cracker sheets (140 g); 1 Tbsp. granulated sugar; 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt; 5 Tbsp. unsalted butter, melted, slightly cooled; 1 tsp. vanilla bean paste or vanilla extract; ½ cup heavy cream; 1 Tbsp. vanilla instant pudding mix; ¼ cup plus ⅓ cup (117 g) granulated sugar; 2 tsp. Diamond Crystal or 1¼ tsp. Morton kosher salt, divided; 3 large eggs; ⅓ cup plus 1 Tbsp. (50 g) all-purpose flour; 2 13.5-oz. cans unsweetened coconut milk (preferably Whole Foods 365 or Thai Kitchen); 6 Tbsp. unsalted butter, cut into pieces; 2 tsp. vanilla bean paste or vanilla extract; 1 cup (loosely packed; 75 g) sweetened shredded coconut; 2 tsp. coconut extract; ¾ cup bittersweet chocolate chips (preferably Guittard 63%) or bittersweet or semisweet coarsely chopped chocolate (preferably Guittard 64%); Toasted unsweetened coconut flakes (for serving)