Line a 13 x 9-inch baking pan with parchment paper. Preheat oven to 350 F. Whisk together eggs, salt, pepper & Parmesan cheese. Grate potatoes, rinse & squeeze moisture out. Combine with egg mixture; pour into prepared baking pan. Bake for 30 minutes. Remove from oven; sprinkle with Swiss cheese & shingle with ham slices. Using parchment paper, gently roll up rosti & bake for another 10 minutes or until cheese melts. Serve hot.