Greek gyros in a pita with tzatziki sauce

Pita:
300 g flour
4 g dry yeast
2 tbsp. olive oil
0.5 tsp cumin
150 ml warm water
a pinch of salt
Filling:
500 g chicken fillet
1 tbsp. olive oil
100 g tomatoes
1 red onion
6 lettuce leaves
salt, pepper to taste

Spice mix:
1/3 tsp cumin
1/3 tsp coriander
1/2 tsp thyme
1/2 tsp marjoram
1/2 tsp oregano
1/2 tsp black pepper
Sauce:
150 g sour cream or Greek yogurt
2 cloves of garlic
2 small fresh cucumbers
1 tsp olive oil
1 bunch fresh cilantro
salt, pepper to taste

Cooking method:

1. Dissolve yeast in 150 ml of warm water. Combine sifted flour with cumin, two tablespoons of olive oil, and a pinch of salt. Mix water with yeast and flour and knead the dough – the consistency of the dough should be tight enough (add more flour if necessary). Place the dough under the lid and leave it in a warm place.
2. Cut the chicken fillet into small pieces, add olive oil and pre-mixed spices, mix. Leave to marinate for 20 minutes.
3. Fry the chicken fillet in a well-heated pan on all sides. Cover the finished meat with a lid so that it does not cool.
4. Roll out the dough into the thinnest possible layer on a floured surface. Cut circles from the dough, about 15 cm in diameter. Fry the cakes on both sides over medium heat in a dry frying pan until golden brown.
5. For Tzatziki sauce, combine natural yogurt, finely grated cucumbers without skin, crushed garlic, olive oil, add salt and pepper to taste. Add chopped cilantro and stir.
6. On a warm flatbread, place the fried chicken, a few lettuce leaves, chopped tomatoes, and red onion, cut into half rings. Drizzle with Tzatziki sauce.
7. Fold the cake in half and serve!