Roasted Salmon Nicoise with Lemony Yogurt Dressing

Serves 2 1 portion of salmon about 170g 1 hard-boiled egg 3 small new potatoes, boiled in their skins A handful of cooked Green/French beans 10 pitted black olives 2 handfuls of mixed lettuce leaves 10 cherry tomatoes. Juice of a lemon 2 tsp olive oil 2 small dollops...