Preheat the oven to 425 degrees F.
Toss the Brussels sprouts together with the olive oil, balsamic vinegar, garlic powder, salt and pepper in a large bowl; then spread them out in an even layer on a rimmed baking sheet. Transfer to the oven and roast until deep golden brown and cooked through, 30 to 35 minutes. Remove from the oven and sprinkle the Brussels sprouts with the pine nuts and Parmesan. Crumble the turkey bacon over top and carefully toss it all together. Transfer to a serving platter. Serve hot.