Preheat your oven to 400°F (200°C).
Season the chicken thighs with salt and black pepper on both sides.
In a large oven-safe skillet, heat the olive oil over medium-high heat.
Add the chicken thighs to the skillet, skin-side down, and sear for about 4-5 minutes until golden brown.
Flip the chicken and add the sliced onion, garlic, red bell pepper, zucchini, and cherry tomatoes around the chicken in the skillet.
Sprinkle the dried thyme and smoked paprika over the vegetables and chicken.
Transfer the skillet to the preheated oven and roast for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F (75°C).
Remove from the oven and let rest for 5 minutes. Garnish with fresh parsley before serving.