Preheat your air fryer to 325°F and grease an air-fryer-safe ramekin or small baking dish.
In a small saucepan over very low heat, combine the pumpkin puree, coconut milk, monk fruit sweetener, pumpkin pie spice, cinnamon, and sea salt.
Stir the mixture constantly until it is warm and well-combined, then remove it from the heat entirely to cool slightly.
In a separate bowl, gently whisk the egg whites until they are fluid but not foamy, ensuring they remain smooth and do not curdle.
Gradually pour the cooled pumpkin mixture into the egg whites while whisking slowly to prevent the eggs from scrambling.
Transfer the combined mixture to a blender and pulse until completely smooth and aerated.
Pour the blended pumpkin base into the prepared baking dish.
Place the dish in the air fryer and bake at 325°F for 15-20 minutes, or until the center is set but still has a slight jiggle.
Remove the dish from the air fryer and allow the pudding to cool for at least 5 minutes.
Spread the zero sugar vanilla pudding evenly over the top of the warm pumpkin custard.
Garnish with hemp seeds and crushed pecans for a fragrant, crunchy finish.