Creating Greek Chicken Stuffed Pitas is easy with these clear steps:

1. Prepare the Marinade: In a bowl, mix olive oil, lemon juice, oregano, garlic powder, salt, and pepper.
2. Marinate the Chicken: Add the cooked chicken to the marinade and toss to coat thoroughly. Let it sit for at least 10 minutes to absorb flavors.
3. Cook the Chicken: If using raw chicken, heat a skillet over medium heat. Cook marinated chicken for about 10-12 minutes or until fully cooked. Shred or dice once cooked.
4. Prepare Vegetables: Chop the cucumber, tomatoes, and red onion, and set them aside for assembly.
5. Warm the Pitas: Lightly toast the pita breads in a dry pan or wrap in a damp paper towel and microwave for about 15 seconds until warm.
6. Assemble the Pitas: Fill each pita bread with the marinated chicken, diced cucumber, chopped tomatoes, red onion, and mixed greens.
7. Add Tzatziki: Top generously with tzatziki sauce before closing the pitas.

By following these simple instructions, you’ll create delicious Greek Chicken Stuffed Pitas that impress both visually and flavor-wise.