Preheat oven to 180 degree C.
Take flour, salt, baking powder, chilli flakes, oregano in a bowl and mix well.
Add oil and rub it into the flour.
Add cold water and knead to a soft dough.
Let it rest for 5 mins.
Now roll it into a large sheet, fold it few times so it forms layers.
Now roll it into a large rectangle.
Cut it into small squares. Fork it all through it.
Pop the cookies on the baking pan.
Bake it for 12 to 15 mins till light golden.
Remove and cool completely.
Store in a air tight container.