Make the marinade: I like to make this marinade in a stone mortar and pestle. It gently bruises the herbs and releases their natural oils. If you don’t have one, simply whisk everything in a bowl or blend briefly in a blender. Mix until fragrant and well combined.
Marinate the chicken: Pat the chicken thighs dry. Rub the marinade all over the chicken, coating every piece. Let this marinate for at least 30 minutes (or as long as overnight in the fridge).
Prepare the vegetables: Preheat the oven to 400°F (200°C). Toss carrots and potatoes with a drizzle of olive oil, salt, and pepper.
Roast meat and vegetables: Arrange vegetables in a roasting pan. Nestle the marinated chicken thighs on top, skin-side up. Roast for 45–55 minutes, until the vegetables are tender, the chicken skin is golden and chicken reaches 165°F (74°C).
Optional: Broil for 2–3 minutes at the end for extra crisp skin.
Rest & serve: Let rest for 5 minutes. Spoon pan juices over the chicken and vegetables. Finish with fresh herbs or a squeeze of lemon if you like.