In a bowl, mix graham cracker crumbs with melted butter until the mixture resembles damp sand and holds shape when pressed.
Divide the mixture into serving cups and gently press it down into an even base layer using the back of a spoon.
Spoon chocolate pudding over the base layer and spread evenly to cover the crumbs completely. Lightly tap the cups to settle the layer.
Add marshmallow fluff on top of the pudding in small portions and gently spread to form a soft, even layer.
Add whipped cream on top and spread or swirl gently to create a thick and smooth top layer.
Sprinkle mini chocolate chips and crushed graham crackers over the whipped cream for added texture.
Place the cups in the freezer and freeze for 2 to 3 hours or until fully set and firm.
Before serving, let the parfait sit at room temperature for a few minutes for easier scooping.