Press the spaghetti with a spatula to submerge the pasta in the liquid. If your skillet, pan or pot is not wide enough, break the spaghetti into halves before cooking. Cover with the lid and reduce heat to medium-low. Cook for 8 minutes or until the pasta is al dente. If the pasta is not cooked after 8 minutes, add a little bit more chicken broth, cover the lid and cook for another 1 to 2 minutes.