Preheat your oven to 400°F (200°C) and prepare a large oven-safe skillet or a baking dish.
In a small bowl, mix together the dried oregano, thyme, smoked paprika, salt, and pepper.
Pat the chicken thighs dry with paper towels and rub them with half of the olive oil and half of the spice mixture on both sides.
In the skillet, heat the remaining olive oil over medium heat. Once hot, add the chicken thighs, searing them for about 4-5 minutes on each side until golden brown. Remove and set aside.
In the same skillet, add the sliced onion and garlic, sautéing until the onion becomes translucent, about 2-3 minutes.
Add the bell pepper and zucchini, stirring occasionally, cooking for another 3-4 minutes until slightly tender.
Toss in the halved cherry tomatoes and the remaining spice mixture, stirring to combine all the vegetables.
Nestle the browned chicken thighs back into the skillet, ensuring they are slightly submerged in the vegetable mixture.
Transfer the skillet to the preheated oven and roast for 20-25 minutes, or until the chicken is cooked through (internal temperature of 165°F or 75°C).
Once baked, remove from the oven and let it rest for a few minutes before serving.
Garnish with fresh basil or parsley and serve with lemon wedges on the side.