Creating Crockpot Greek Chicken Pitas with Tzatziki is a straightforward process. Follow these simple steps to achieve incredible flavors!

1. Prepare Chicken: Place the boneless chicken breasts in the slow cooker.
2. Mix Marinade: In a bowl, combine chicken broth, olive oil, lemon juice, oregano, garlic powder, onion powder, paprika, salt, black pepper, and red pepper flakes (if using).
3. Cook Chicken: Pour the marinade over the chicken in the crockpot. Ensure the chicken is evenly coated.
4. Set Cooker: Cover the slow cooker and set it to low for 6-8 hours or high for 3-4 hours, depending on your schedule.
5. Check for Doneness: After the cooking time, check if the chicken is thoroughly cooked and tender. It should shred easily with a fork.
6. Make Tzatziki Sauce: While the chicken is cooking, prepare the tzatziki. In a bowl, combine the grated cucumber, Greek yogurt, dill, minced garlic, and some salt and pepper to taste.
7. Shred Chicken: Remove the cooked chicken from the slow cooker and shred it using two forks. Return shredded chicken to the crockpot, mixing it with the juices.
8. Warm Pita Bread: Before serving, warm the pita bread in the oven or on a skillet for a few minutes.
9. Assemble Pitas: Place a generous amount of shredded chicken into each pita.
10. Add Toppings: Top with tzatziki, sliced tomatoes, and lettuce.

These steps will guide you toward creating an incredible meal that captures the essence of Greek cooking.