Heat the olive oil in a large skillet over medium-high heat.
Remove the silver skin from the pork tenderloin, then cut it into medallions.
Season both sides of the medallions with sea salt, freshly cracked pepper, sage, and garlic powder, to taste.
Place into the hot skillet and cook for 4-5 minutes on each side or until golden brown. Remove the pork from the skillet and set it aside on a plate, then cover with a foil tent.
Add the apple cider, chicken broth, and vinegar to the skillet. Cook on medium for 4-5 minutes or until the sauce has thickened and reduced. Taste the sauce and season with sea salt and freshly cracked pepper to taste.
Add the pork back to the skillet along with any juices. Toss the pork to coat evenly in the sauce.
Serve immediately with the remaining sauce drizzled over the top. Enjoy.