Step 1Bring a large pot of salted water to a boil.
Step 2Heat the olive oil in a large skillet over medium-high heat. Add the garlic and chile flakes, and cook until beginning to brown, 30 seconds to 1 minute. Add the fava beans and wine, cover, and simmer until the beans are tender but still have a little bite to them, about 4 minutes.
Step 3While the favas cook, add the pasta to the boiling water and cook, stirring occasionally, until al dente. Reserve 1 cup of the pasta cooking water before you drain it.
Step 4Drain the pasta, and add it to the skillet along with the lemon zest and juice, and toss to combine, adding at least 1/2 cup of the reserved cooking water to make a loose sauce. Season the pasta with salt and pepper, and serve while hot.