Lighter Fettuccine Alfredo with Bacon

refrigerated fresh fettuccine 4 slices bacon 2 garlic cloves 1 Tablespoon all-purpose flour 1 cup fat-free milk (or any milk) 2/3 cup grated Parmesan 1/2 teaspoon kosher salt 2 Tablespoons chopped fresh parsley Freshly ground black pepper