In a large bowl
, combine graham-cracker crumbs, coconut, pecans, and sugar. Add melted butter, stirring until well combined. Spread mixture on a rimmed sheet pan and bake for approximately 15 minutes until coconut is golden brown, stirring regularly and watching to prevent burning. Set aside to cool.*
Reserve 2 tablespoons crumb mixture. In a large glass serving bowl or in individual stemmed glasses, layer 1/3 of the pudding, 1/2 of the bananas, 1/2 of the crumb mixture, another 1/3 of the pudding, 1/2 of the crumb mixture, remaining bananas, and remaining pudding. Top with whipped topping and sprinkle reserved crumbs on top.