Place a large skillet over medium heat and preheat oven to 400 degrees.

Take your pork tenderloin and place it on a plate.  Pour egg white over the tenderloin and toss to coat.

 In a small bowl combine almond flour, chopped rosemary, minced garlic, salt and pepper. 

 Pour almond flour mixture over pork and press it in to coat.

Once the pan is hot, add pork and cook for about 2 minutes on each side or until lightly browned. Then transfer pork to a foil lined baking sheet. Bake for 20 minutes, then remove and tent with foil. Let sit for 10 minutes so juices rest.