Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Scrub the sweet potato, pierce it several times with a fork, and place it in the oven to begin roasting for 15 minutes before adding the rest.
In a small bowl, combine the minced rosemary, thyme, sea salt, and black pepper.
Rub the pork tenderloin with half of the olive oil and then coat it thoroughly with the herb mixture.
Toss the asparagus spears with the remaining olive oil on the baking sheet.
Move the sweet potato to one side of the tray, place the pork in the center, and arrange the asparagus on the other side.
Roast everything together for 18-22 minutes or until the pork reaches an internal temperature of 145°F and the asparagus is tender.
Carefully remove the sweet potato skin, mash the flesh with ghee until smooth, and slice the pork into thick medallions to serve.