Preheat the oven to 425°F.
Combine the oil, lemon juice, garlic, oregano, thyme, Dijon mustard, salt, and pepper.
Place the chicken thighs in a bowl and pour ⅔ of the marinade on top. Marinate the chicken for 10 to 15 minutes.
Add the zucchini, bell pepper, red onion, and tomatoes onto the baking sheet and drizzle the remaining marinade on top.
Add the chicken thighs the baking sheet,
Bake for 30 minutes.
Remove the baking sheet from the oven, add the olives and feta and then place it back in the oven for another 10 to 15 minutes,
