01 - Mound the flour on a clean work surface and create a deep well in the center. Add the eggs and salt to the well. Using a fork, gently beat the eggs while gradually pulling in flour from the inner walls of the well. Continue mixing until a shaggy dough forms, then knead by hand for 7 to 8 minutes until the dough is smooth, elastic, and springs back when pressed. Wrap tightly in plastic wrap and let rest at room temperature for 20 minutes.
02 - In a mixing bowl, combine the finely chopped chicken breast, ricotta cheese, grated Parmesan, minced garlic, chopped parsley, ground nutmeg, and salt and pepper to taste. Stir until all ingredients are evenly distributed and the mixture holds together when pressed.
03 - Unwrap the rested dough and divide it into manageable portions. Using a rolling pin, roll each portion out to approximately 1/16-inch thickness. Cut the sheet into 2-inch squares or circles using a knife or pasta cutter. Place a small spoonful of filling in the center of each piece, fold the dough over to form a triangle or half-moon, and press the edges firmly to seal, squeezing out any air. Bring the two bottom corners together and pinch to form the classic tortellini shape.
04 - Bring a large pot of generously salted water to a rolling boil. Working in batches to avoid overcrowding, gently drop the tortellini into the boiling water. Cook for 3 to 4 minutes, or until the pasta floats to the surface and the edges are tender. Remove with a slotted spoon and transfer to a plate lightly coated with sauce to prevent sticking.
05 - While the tortellini cook, melt the butter in a saucepan over medium heat. Pour in the heavy cream and bring to a gentle simmer for 2 to 3 minutes, allowing it to slightly thicken. Stir in the grated Parmesan cheese and continue stirring until fully melted and smooth. Season with freshly ground black pepper to taste.
06 - Gently toss the cooked tortellini in the cream sauce until evenly coated. Transfer to warm serving plates or bowls and garnish with additional grated Parmesan cheese and freshly chopped parsley. Serve immediately.