Preheat the oven to 425°F (220°C).
Peel and dice the sweet potatoes into 1-inch cubes and slice the carrots into 1/2-inch rounds.
In a large mixing bowl, combine the sweet potatoes and carrots. Drizzle with olive oil and sprinkle with garlic powder, paprika, dried thyme, salt, and pepper. Toss to coat evenly.
Spread the vegetables in a single layer on a baking sheet. Roast for 25-30 minutes, stirring halfway through, until tender and caramelized.
Let cool for a few minutes before serving. Garnish with fresh parsley.