Combine 170 ml lukewarm water, 170 ml olive oil, and 1 tablespoon sugar in a bowl. Mix the dry yeast with the 400 g flour, then add to the liquid. Knead by hand into a smooth dough. Cover and let rise for 45 minutes.
While the dough rises, wash the peppers and cut into long strips. Roughly chop the parsley. In a bowl, combine salt, sugar, pepper, and pressed garlic with lemon juice. Stir in the parsley, then add olive oil and mix well. Add to the pepper strips and toss to coat.
Line a baking sheet with baking paper. Spread the dough evenly over the sheet. Spread the marinated pepper mixture evenly over the dough.
Bake in a non-preheated oven at 180 °C (350 °F) for 45 minutes until golden brown.