Deflate the dough and divide it into four equal sized pieces. Shape each piece into a tight ball and place, seam side down on your work surface. Cover with oiled plastic wrap. Let rest for an hour.
Pre-heat the oven to 250C (500F). Brush two half sheet pans with 2 tablespoons of olive oil each.
Place one dough ball on your work surface, and roll it out to about 15 inch by 5 inch oval. Place it on the baking sheet, lengthwise. Repeat with the rest of the dough balls, two per baking sheet. If the dough springs back, let it rest for another 10 to 20 minutes, and re-roll. Dock each about 15 times with a fork. This is important or the bread will puff up a lot.
Brush each oblong piece of dough with the rest of the olive oil. Bake the dough for 8 to 10 minutes till it just starts turning brown.
Remove the pans from the oven, and spread them with the red pepper and onion mixture. Sprinkle with the pine nuts. Place the baking sheets back into the oven, and bake for about 15 minutes or so, until the flatbreads are golden and crispy.
Remove the pans from the oven and let cool on the pans for about 5 minutes. Sprinkle with the oregano or parsley, and transfer to a cutting board to slice and serve.