Chicken Carbonara

INGREDIENTS

• 8 large egg yolks
• 1 tablespoon finely grated lemon peel
• Salt
• 2 teaspoons minced garlic
• 4 cups coarsely shredded chicken (from 1 roasted chicken)
• 1 cup freshly grated Parmesan
• 1/4 cup chopped fresh basil leaves
• 1/2 cup chopped walnuts, toasted
• 2 teaspoons olive oil
• 1/4 cup chopped fresh Italian parsley leaves
• 4 ounces thinly sliced pancetta, chopped
• 2 1/2 cups whipping cream
• 1 pound spaghetti
• Freshly ground black pepper