*If you are making pizza dough specifically for this recipe, knead the orange zest into the dough while making it. Otherwise, just sprinkle the zest over the dough after it's been rolled and gently press it into the dough.
Roll dough into 10-12 inch disc and lay on a baking sheet.
In a small mixing bowl, add yogurt, mustard and black pepper and mix with a spoon until well combined. Spread over dough.
Cover with mozzarella cheese and cooked chicken.
Bake in the oven for about 10 minutes, until cheese is melted and starts to colour on the edge.
Once your pizza is out of the oven, top with arugula leaves, orange and grapefruits supremes, goat cheese, walnuts and pomegranate seeds.