Prepare the sauce by whisking the honey, apple cider vinegar, and soy sauce in a small bowl until well-mixed.
Prepare the seasoning blend by mixing the garlic powder, paprika, onion powder, sea salt, and freshly cracked black pepper to taste.
Season the pork tenderloin by sprinkling the seasoning blend evenly all over the pork.
Sear the pork by heating the oil in a large ovenproof cast-iron skillet over medium-high heat. Add the pork and sear on all sides, about 5-7 minutes.
Add garlic to the cast-iron skillet and cook, stirring constantly, for 30 seconds.
Add the well-whisked sauce, and turn the tenderloin to coat it, then immediately transfer to the oven.
Roast in the oven for 15 – 18 minutes or until the internal temperature reaches 145 degrees with a meat thermometer.
Remove the pork onto a plate, loosely cover with foil, and rest 5 minutes.
Finish the sauce by placing the cast-iron skillet with the sauce on the stove over medium-high heat, and simmer rapidly for 2-3 minutes until the liquid reduces to a thin syrup.
Remove from the stove, place the pork in, and turn to coat in the sauce.
To serve, slice the pork into thick slices and drizzle some sauce over it, and sprinkle with fresh parsley. Enjoy.