Saute the potatoes in a large frying pan with the oil, until they start to soften.
Add in the courgettes and continue to cook.
Beat the eggs, add in the herbs, black pepper and yoghurt
Pour the eggs over the vegetables so they are covered. You may have to swirl the pan or move some of the veggies around.
Cook on a medium heat until the top starts to set.
Transfer under the grill and continue to cook until the top is set.
Cut into wedges and serve with a salad to make this give you 2 of your vegetable portions.