Mix flour, sourdough starter, water, olive oil, salt, garlic powder, and paprika until combined.

Let the dough rest for 30 minutes, then stretch and fold a few times.

Cover and let rise at room temperature for 4-6 hours, until doubled.

Line trays with parchment paper and spread dough evenly.

Dimple the dough with your fingers, drizzle with olive oil, and sprinkle rosemary and black pepper.

Let rise for another 1 hour.

Bake at 220°C for 20-25 minutes until golden brown.