Green shakshuka

Name: Green shakshuka
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: Middle Eastern
Ingredients: 3 tbsp olive oil; 2 leeks, washed and sliced; 200g bag baby spinach; 250g frozen peas; 2 fat garlic cloves, finely chopped; 1 tbsp cumin seeds; small pack parsley, roughly chopped; small pack coriander, roughly chopped; small pack mint, leaves picked and roughly chopped, reserving a few leaves to garnish; 8 medium eggs; 150g pot natural yogurt; 1 tbsp harissa; flatbread, to serve