In a bowl, mix wheat flour, salt, pepper, baking powder and ajwain/carom seeds.
Next, add the oil and give a quick mix. Then, pour the yogurt and start kneading.
Add cold water as much required to make a soft and smooth dough.
Cover the dough with a clear-wrap and let it rest for 30 mins.
Dust some flour on the rolling pin and the wooden/marble board you are using to roll the dough.
Roll it into a thin sheet. Prick on the sheets using a fork.
Using a cookie cutter, cut it in your desired shape.
Place it on a baking sheet and bake at 375 F for about 20 mins (Or until they are golden brown in color).
Once baked, let it cool completely before you store it in an air tight jar.
Enjoy the crispy thin crackers!