Heat the EVOO in a Dutch oven over medium-high heat. Pat the lamb very dry and add to the very hot pot. Brown for a minute or two without stirring, then break up the meat and continue to brown and crumble for a few minutes more. Add in the onion, carrot, garlic and Fresno chili pepper. Season with salt and liberal amount of black pepper; soften for 5 minutes more, then the add the bay leaves, orange zest, rosemary and tomato paste. Stir for a minute, then deglaze the pan with the wine. Add the stock and milk, reduce the heat to a low simmer and cook for 45 minutes, stirring occasionally.
Bring the pot of water to a boil for the pasta. Salt the water and cook the pasta to al dente. Reserve 1/2 cup of the starchy cooking water and drain.
Combine the pasta with the sauce, using the reserved starchy cooking water to combine. Remove the bay leaves and serve in shallow bowls topped with Parmigiano Reggiano cheese and some parsley.