01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - Combine sweet potato cubes and olive oil in a large mixing bowl. Toss until evenly coated.
03 - Mix smoked paprika, garlic powder, onion powder, thyme, oregano, cayenne, black pepper, and salt in a small bowl.
04 - Sprinkle spice blend over sweet potatoes. Toss again until uniformly coated.
05 - Spread sweet potatoes in a single layer on the prepared baking sheet.
06 - Roast for 25–30 minutes, turning once halfway through, until golden brown with crisp edges and tender centers.
07 - Serve hot, garnished with fresh herbs if desired.