01 - Set the oven to 425°F to prepare for roasting.
02 - Dry chicken thighs with paper towels and season all sides with salt and black pepper.
03 - Combine olive oil, minced garlic, lemon zest, lemon juice, thyme, rosemary, and paprika in a large bowl, whisking until blended.
04 - Add chicken thighs to the marinade, turning to coat evenly. Let rest for at least 10 minutes to infuse flavors.
05 - On a large baking sheet or roasting pan, toss halved potatoes and red onion wedges with a drizzle of olive oil, salt, and pepper.
06 - Place marinated chicken thighs skin side up over the potatoes and onions. Pour any remaining marinade evenly over the top.
07 - Cook in the oven for 40 to 45 minutes until chicken skin is golden and an internal temperature of 165°F is reached, and potatoes are tender.
08 - For crispier skin, broil on high for 2 to 3 minutes at the end of cooking.
09 - Sprinkle with fresh parsley and serve with lemon wedges if desired.