Greek Chicken One Tray Bake

• 3 tbsp extra virgin olive oil
• 3 tbsp lemon juice
• 1 tsp dried oregano
• 1 tsp garlic powder
• 1 tsp smoked paprika
• 4 chicken thigh fillets
• 1 kg baby potatoes, halved/quartered
• 400 g green beans, ends trimmed
• 200 g cherry tomatoes, halved
• 0.5 cup feta cheese, crumbled
• 0.25 cup fresh parsley leaves
• 0.25 cup tzatziki