Dough preparation
In a large bowl, whisk together flour, instant yeast, salt and sugar and mix evenly.
Add water and olive oil. Mix well with a spatula to combine until a shaggy dough ball is formed.
Transfer the dough onto a clean and dry surface and knead until the dough ball is smooth and supple. It will be pliable and non-sticky. A well kneaded dough is smooth and can hold its shape.
Cover and let the dough rest in a large bowl for 1 hour or until it doubles in size. You can apply a little bit of oil on the surface of the dough ball to prevent it from losing moisture.
Transfer dough onto a lightly floured surface. Roll the dough into a log and divide it into 10 equal pieces with a knife or bench scraper. Take one piece at a time and shape each piece into a smooth ball.
Cover and let them rest for 30 minutes. The resting period helps the gluten in the dough relax and re-distributes air bubbles evenly inside the dough.
Use a rolling pin to flatten each ball into a 6-inch circle (approximately). Sprinkle some flour if needed to prevent sticking. Set on a lightly floured surface, cover with a towel and let pitas rest for about 10 minutes.
Baking
Preheat the baking tray inside the oven at 230°C. Bake the pitas for 5 minutes. Transfer to a wire cooling rack and repeat with remaining pitas.
Brush some olive oil on a preheated skillet. Place a pita onto the hot pan and cook for 3 minutes until it begins to puff up and the bottom has brown spots and blisters. Flip the pita and cook for 2 more minutes.
Transfer the pitas onto a wire cooling rack and allow them to cool down for 10 minutes.
