Preheat your oven to 400°F and line a large rimmed sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and cut into half-inch cubes, slice the zucchini into half-moons, and slice the bratwurst into one-inch rounds.
Place the sweet potatoes, zucchini, and bratwurst rounds onto the prepared sheet pan.
Drizzle the olive oil over the ingredients and sprinkle evenly with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything together with your hands or tongs until well-coated, then spread into a single layer across the pan.
Roast in the center of the oven for 20 to 25 minutes, tossing halfway through, until the sweet potatoes are fork-tender and the bratwurst is golden brown.
Remove from the oven and serve immediately while the vegetables are hot and the flavors are vibrant.