Chicken Souvlaki with Tzatziki

Ingredients

For 4 servings

• 1.5 lb / 750 g chicken thigh fillets ((or breast), cut into 1"/2.5cm pieces)
• 2 tbsp olive oil
• 1/4 cup lemon juice
• 3 garlic cloves (, minced)
• 2 tbsp dried oregano
• 1/2 - 3/4 tsp salt
• Black pepper
• 1 tbsp olive oil
• Flatbreads / wraps / pita bread
• Lettuce
• Tomato slices
• 2 Lebanese cucumbers ((to make about ½ cup grated cucumber after squeezing out juice))
• 1 1/4 cups / 300 g plain Greek yoghurt
• 2 tsp white wine vinegar ((or red wine or apple cider vinegar))
• 1 tbsp lemon juice
• 1/2 garlic clove (, minced)
• 1 tbsp extra virgin olive oil ((or more if you want richer))
• 1/2 tsp salt
• Black pepper