Preheat oven to 400°F
Slice sausage into ½ inch rounds. Dice sweet potato into ½ inch dice (about 3 cups) Slice red onion into ½ inch slices.
In a large bowl combine diced sweet potato and red onion slices. Drizzle with 2 Tablespoons olive oil and sprinkle with Italian seasoning, garlic powder and paprika. Toss to coat.
Spread sweet potatoes and onion onto a large sheet pan in an even layer. If you cannot make a single layer, use a second sheet pan. Bake for 15 minutes.
Add sausage slices, give the sheet pan a good stir, and continue baking for 10 more minutes.
Meanwhile, add chopped kale to the same bowl you seasoned the potatoes and onion in. Drizzle with remaining 1 Tablespoon olive oil and season with salt and pepper.
Add kale to the sheet pan(s) and bake for an additional 10 minutes. Remove from oven and sprinkle with feta cheese. Toss everything to fully combine
Serve topped with your favorite style eggs.