1. Remove any bones, and skin if desired, from the snapper and roughly break into bite-sized pieces.
2. Boil the potatoes until just tender then drain. Heat 2 tablespoons of olive oil in a frying pan; add the potatoes and fry until golden. Wipe out the pan with a paper towel.
3. Boil the eggs for 4 minutes, cool and peel. Cut into quarters.
4. Heat 1 tablespoon of oil in the frying pan; when hot add the bacon and cook until crispy. Drain on paper towels then break into pieces.
5. Heat 1 tablespoon of olive oil in the fry pan, add the spinach and cook for a minute, until just wilted. Assemble all ingredients on plates, season and serve with labneh and toasted sourdough.