In a large bowl combine eggs, onion, bread crumbs, cheese, parsley, 1/2 teaspoon of the salt, and 1/2 teaspoon of the pepper. Add ground beef; mix well. Shape mixture into 1 1/4-inch meatballs. In a large skillet cook meatballs, half at a time, in hot oil over medium high heat until brown on all sides. Remove from skillet and drain on paper towels.