Bring a large pot of water to a boil, salt it, add the pasta and cook until al dente. Drain, reserving a ladleful of pasta cooking water.
In a small saucepan, bring the chicken stock and saffron to a boil over medium-high heat. Lower the heat and simmer until reduced.
Meanwhile, in a large skillet, heat the EVOO, 3 turns of the pan, over medium heat. Add the pancetta and cook until just crisp, 5 minutes. Stir in the garlic for 1 or 2 minutes, then stir in the wine and turmeric.
Beat the egg yolks with the reserved pasta cooking water. Add the pasta to the skillet. Pour in the saffron stock and toss; season with pepper. Turn off the heat and stir in the egg yolks, cheese and parsley. Pass extra cheese at the table.