01 - Preheat oven to 425°F and line a large baking sheet with parchment paper.
02 - In a large mixing bowl, combine diced potatoes, red onion, and bell pepper.
03 - Drizzle olive oil over the vegetables, then sprinkle smoked paprika, garlic powder, thyme, rosemary, kosher salt, and black pepper. Toss thoroughly to coat evenly.
04 - Spread the vegetable mixture in a single layer on the prepared baking sheet.
05 - Roast for 35 minutes, turning the potatoes halfway through, until golden brown and crispy along the edges.
06 - Remove from oven, sprinkle with chopped fresh parsley or chives if desired, and serve immediately.