01 - Preheat the oven to 425°F (220°C). Line a large sheet pan with parchment paper or foil for easier cleanup.
02 - In a small mixing bowl, whisk together olive oil, lemon juice, garlic powder, thyme, paprika, oregano, salt, and black pepper until blended.
03 - Place chicken thighs on the prepared sheet pan. Distribute potatoes, carrots, bell pepper, and onion evenly around the chicken.
04 - Drizzle the marinade over the chicken and vegetables. Toss the vegetables gently to ensure even coating.
05 - Transfer the pan to the oven and roast for 35 to 40 minutes, or until chicken skin is golden, the internal temperature is 165°F (74°C), and vegetables are tender.
06 - For crispier chicken skin and caramelized vegetables, broil for 2 to 3 minutes, monitoring to prevent burning.
07 - Sprinkle with chopped parsley and serve immediately with lemon wedges on the side.