In a mixing bowl, combine flour, salt, sugar, and yeast.

Add warm water and olive oil, then knead until smooth.

Let the dough rise for 1 hour in a warm place.

Preheat the oven to 475°F (245°C).

Roll out the dough on a floured surface.

Spread tomato sauce over the base, then add sardines, cheese, oregano, and pepper.

Transfer the pizza to a pizza stone and bake for 15-20 minutes.

Remove from oven and let cool for a few minutes before slicing.