Combine the salt, flour and olive oil to a large bowl. Add the water gradually while whisking and stop when the dough is just about to get sticky. Add the roasted seeds, whisk, cover the bowl and refrigerate overnight.
Preheat the oven to 450-480 °F (230-250 °C) and place a deep baking pan filled with water up to ¾ of its height at the bottom of the oven. The steam created by doing so will help produce a very moist result.
Use flour to remove the dough from the bowl and roll it into a large ball. Cut out roll-shaped pieces using a dough cutter and cover them with semolina flour.
Create diagonal cuts with a knife on top of each roll.
Line a sheet pan with parchment paper and bake for 25 to 35 minutes, or until golden and a firm crust has formed.