01 - Heat oven to 425°F (218°C).
02 - Line a large baking sheet with parchment paper or grease lightly.
03 - In a mixing bowl, toss potatoes, onion, carrots, and garlic with half the olive oil, half the salt, pepper, rosemary, thyme, and paprika until well coated.
04 - Spread vegetables evenly in a single layer on the prepared baking sheet.
05 - Rub chicken thighs with the remaining olive oil, salt, pepper, rosemary, thyme, and paprika. Arrange chicken thighs skin-side up on top of the vegetables.
06 - Roast for 40 minutes or until chicken is golden and potatoes are tender. For crispier skin, broil for 2 to 3 minutes if desired.
07 - Remove from oven, rest 3 to 5 minutes, and finish with chopped parsley before serving if desired.