Mediterranean Chicken Gyros with Creamy Feta Tzatziki

Ingredients

• 1 lb boneless, skinless chicken thighs
• 1 tablespoon olive oil
• 2 teaspoons dried oregano
• 1 teaspoon garlic powder
• Salt to taste
• Pepper to taste
• 4 gluten-free pita breads
• 1 cup cherry tomatoes, halved
• 1 cucumber, diced
• 1 red onion, thinly sliced
• 1 cup plain Greek yogurt
• 1/2 cup feta cheese, crumbled
• 1 tablespoon lemon juice
• 1 clove garlic, minced
• Fresh parsley