Spray counter lightly with non-stick cooking spray. Combine rolls and roll into a 12-inch circle. Place on sprayed pizza pan and poke several times with a fork to prevent bubbles from forming.
Bake crust at 375º for 5-10 minutes until it begins to turn golden.
Combine eggs, cream, salt and pepper. Add cheeses, ham and onions. Spread mixture evenly over pre-baked pizza crust.
Bake for 10-12 minutes. Sprinkle top with freshly ground black pepper if desired.