Preheat your oven to 400°F and line two large rimmed baking sheets with parchment paper for easy cleanup.
Peel the sweet potatoes and cut them 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 dried thyme to create the savory glaze.
Place the pork tenderloins on one of the prepared baking sheets and brush them with half of the maple-Dijon glaze.
In a large mixing bowl, toss the cubed sweet potatoes and halved Brussels sprouts with olive oil, sea salt, and black pepper until evenly coated.
Spread the vegetables in a single layer across the remaining space on the pork pan and the entire second baking sheet.
Roast for 20 to 25 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 into medallions.
Assemble the bowls by dividing the roasted vegetables and sliced pork tenderloin into six equal portions.