Preheat your oven to 400°F (200°C).
Combine the chicken thighs, cherry tomatoes, bell pepper, zucchini, red onion, and minced garlic in a large bowl.
Drizzle with olive oil and sprinkle with oregano, salt, and pepper. Toss everything to coat evenly.
Spread the chicken and vegetables in a single layer on a sheet pan.
Bake for 25-30 minutes or until the chicken is cooked through and the vegetables are tender.
Serve with fresh lemon wedges to add a zesty finish.
