Separate the pizza dough into two pieces, one piece about twice as big as the other. Roll the large piece out into a circle and place on a baking tray (flour your work surface if necessary). Roll the small piece into an oval and cut in half to make ears. Press the ears into the top of the face.
Spread the dough with tomato paste. Lay over the mozzarella, mushrooms and ham, then make a face using olives as the eyes, the cherry tomato for a nose and the slice of capsicum for a smile.
Bake for 10 minutes or according to directions for dough.