Preheat your oven to 350°F and line a 12-cup muffin tin with parchment paper liners.
In a large mixing bowl, whisk together the pumpkin puree, egg whites, Greek yogurt, melted coconut oil, maple syrup, and vanilla extract until the mixture is smooth and well combined.
In a separate bowl, sift together the almond flour, vanilla protein powder, pumpkin pie spice, sea salt, baking soda, and baking powder.
Slowly fold the dry ingredients into the wet mixture using a spatula, stirring until just combined while being careful not to overmix.
Divide the batter evenly among the 12 muffin cups, filling each one nearly to the top.
Bake for 22 to 25 minutes, or until the tops are golden and a toothpick inserted into the center comes out clean.
Remove from the oven and let the muffins cool in the tin for 10 minutes before transferring them to a wire rack to cool completely.