01 - Set the oven to 425°F.
02 - In a large bowl, whisk together olive oil, garlic, lemon zest, lemon juice, oregano, thyme, smoked paprika, salt, and black pepper.
03 - Add chicken thighs to the marinade and toss to coat evenly. Set aside while preparing potatoes.
04 - Spread halved potatoes and sliced onion evenly on a large roasting pan. Drizzle with olive oil and season lightly with salt and pepper.
05 - Place marinated chicken thighs skin side up over the potatoes and onions. Pour remaining marinade over the top.
06 - Cook in the oven for 40 to 45 minutes, until chicken skin is golden, internal temperature reaches 165°F, and potatoes are tender.
07 - For crispier skin, broil for the last 2 to 3 minutes, monitoring closely to avoid burning.
08 - Allow to rest for 5 minutes. Garnish with fresh parsley and serve with lemon wedges.