Quickly combine the flour, salt, sugar, and yeast in a large bowl.
Add the warm water and olive oil, and stir until a shaggy dough forms.
Place the dough onto a lightly floured countertop and knead for about 9 minutes or until the dough is smooth and elastic.
Cover the dough in a clean, oiled bowl with a damp towel. Allow the dough rise in a draft-free place for about an hour or until it has doubled.
Preheat your oven to 500°F and place a pizza stone or baking sheet on the bottom rack.
Punch down the bread dough and divide it into eight equal pieces. Roll each piece into a ball and let them rest for about 10 minutes.
Roll out each ball into a flat disk about 1/4 inch thick.
Place the disks on the hot baking sheet or pizza stone and bake for about 5 minutes until they puff up and are lightly browned.
Remove the pitas from the oven and let them cool on a wire rack.
