Late-Night Pasta

INGREDIENTS

• 6 ounces thin spaghetti or tagliolini
• 3 pieces applewood smoked bacon, thinly sliced into 1/4-inch-thick pieces
• 1 1/2 teaspoon coarsely cracked black pepper, plus more for serving
• 1/2 cup onion, chopped
• 1/2 clove garlic, minced
• 1 cup freshly grated Parmesan cheese
• 4 tablespoons unsalted butter
• 2 large eggs
• 1 tablespoon chopped flat-leaf parsley
• Coarse salt