Preheat the oven to 400°F.
Trim any excess fat from the pork tenderloin and pat dry with paper towels.
Season the pork evenly with a pinch of salt and pepper.
In a small bowl, mix the honey with a little black pepper for an aromatic glaze.
Heat a skillet over medium-high heat, sear the pork tenderloin on all sides until lightly browned (about 2 minutes per side).
Transfer the seared pork onto a baking sheet.
Core and slice the apple into wedges, and trim the Brussels sprouts by cutting off the stem ends and halving them.
Toss the apple wedges and Brussels sprouts with olive oil, salt, and pepper on the baking sheet around the pork.
Drizzle the honey glaze over the pork tenderloin.
Roast everything in the oven for 15-20 minutes, or until the pork reaches an internal temperature of 145°F and the vegetables are tender.
Let the pork rest for 5 minutes before slicing. Serve slices of pork with a mix of roasted apples and Brussels sprouts.