Steps
1. Cut the chicken breast into bite-sized cubes.
2. In a bowl, mix olive oil, lemon juice, oregano, salt, and pepper.
3. Add chicken cubes to the marinade, ensuring they are well coated. Let it marinate for at least 30 minutes.
4. Preheat a grill or grill pan over medium-high heat.
5. Thread the marinated chicken onto skewers.
6. Grill the chicken skewers for about 10-12 minutes, turning occasionally, until fully cooked.
7. Warm the pita bread on the grill for 1-2 minutes.
8. Serve the chicken souvlaki in the pita, topped with tzatziki and garnished with fresh parsley.