1. Preheat oven to 425°.
2. Place crust on a baking sheet. Bake at 425° for 8 minutes. Remove from oven; arrange goat cheese evenly over crust.
3. Combine strawberries, watercress, olive oil, juice, salt, and black pepper; toss gently to coat. Arrange strawberry mixture evenly over goat cheese. Sprinkle pizza with Parmigiano-Reggiano and nuts. Cut into 12 wedges. Serve immediately.