In a medium bowl, combine the flour, salt, and nutmeg. In a separate bowl, combine the eggs and milk. Add the egg mixture to the dry ingredients and stir until smooth; let stand for 30 minutes. Press the batter through a sieve into boiling salted water. Cook about 1 minute. Drop cooked spaetzle into ice water. Drain spaetzle and set aside.
In a skillet, cook the bacon over medium heat until golden, about 4 to 5 minutes. Add onions and cook until soft, about 4 to 5 minutes. In a separate skillet, saute the cooked spaetzle in the oil until golden. Add the bacon mixture, season as needed with salt and pepper, and garnish with chopped fresh parsley.