Combine whole wheat flour, all-purpose flour, oil, water, and coarse salt in a bowl and mix well.

Roll out the dough and place it in a pie dish.

Mix eggs, salt, pepper, onion powder, garlic powder, and milk together.

Finely chop a leek and a spring onion and add them to the egg mixture.

Add chicken strips and transfer everything to the pie crust.

Sprinkle grated cheese on top of the pie.

Bake the pie for 20-30 minutes at 200 degrees Celsius (392 degrees Fahrenheit) (fan oven).

Let the pie cool slightly before serving.