Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and cut into 1/2-inch cubes, then trim and halve the Brussels sprouts.
In a small bowl, whisk together the maple syrup, Dijon mustard, garlic powder, and smoked paprika to create the glaze.
Place the pork tenderloin in the center of the baking sheet and brush with half of the prepared maple-Dijon glaze.
Toss the cubed sweet potatoes and halved Brussels sprouts with olive oil, sea salt, and black pepper directly on the pan, then spread them in a single layer around the pork.
Roast for 15 to 18 minutes, or until the pork reaches an internal temperature of 145°F and the vegetables are tender and browned.
Remove from the oven, brush the remaining glaze over the pork, and let it rest for 5 minutes before slicing.
Assemble the bowl by layering the roasted vegetables and topping with the sliced pork tenderloin.