01 -  Set the oven to 400°F (204°C) and allow it to reach temperature. 
 02 -  Line a large baking sheet with parchment paper or lightly grease it with oil. 
 03 -  In a large bowl, toss the sliced sausage, halved potatoes, and Brussels sprouts with olive oil, kosher salt, black pepper, smoked paprika, and garlic powder until evenly coated. 
 04 -  Spread the sausage and vegetable mixture in an even layer on the prepared baking sheet without overcrowding. 
 05 -  Place the tray in the oven and roast for 25 minutes. Stir the mixture, then continue roasting for an additional 10-15 minutes or until the potatoes are fork-tender and the Brussels sprouts are golden-brown at the edges. 
 06 -  Remove from the oven and transfer to serving plates. Serve hot.