01 - Preheat the 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. Drizzle with olive oil and toss to coat evenly.
03 - Sprinkle smoked paprika, garlic powder, thyme, rosemary, kosher salt, and black pepper over the vegetables. Toss thoroughly to distribute the spices evenly.
04 - Spread the vegetable mixture in a single layer on the prepared baking sheet.
05 - Roast in the oven for 35 minutes, turning the potatoes halfway through, until they are golden brown and crisp on the edges.
06 - Remove from the oven, sprinkle with chopped fresh parsley or chives, and serve immediately.