Preheat your oven to 400°F (200°C) to ensure it's hot and ready for roasting.
In a large mixing bowl, whisk together the olive oil, lemon juice, minced garlic, dried oregano, thyme, smoked paprika, sea salt, and black pepper until fully combined.
Add the chicken thighs into the marinade and coat each piece thoroughly. Allow to marinate for a minimum of 15 minutes, or up to 2 hours in the refrigerator.
In a large oven-safe skillet or roasting pan, add the quartered potatoes, sliced red bell pepper, and sliced onion. Drizzle with a tablespoon of olive oil, and season with sea salt, black pepper, and a pinch of dried oregano. Toss the vegetables well.
Create a space in the center of the vegetables and nestle the marinated chicken thighs right on top.
Transfer the skillet or roasting pan to the preheated oven. Bake for about 35-40 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and the potatoes are tender.
For an extra crispy finish, switch the oven to broil for an additional 2-3 minutes, keeping an eye to prevent burning.
Once done, carefully remove from the oven and let it rest for a few minutes. Before serving, sprinkle with fresh parsley.
Notes
Serve directly from the skillet for a rustic look, or plate individually with pan juices.