Traditional Scotch Eggs (Crispy, Savory, British Classic) - Zest Plate

Ingredients

• 5 large eggs, divided (4 for boiling, 1 for coating)
• 10 ounces uncooked breakfast sausage, casings removed
• 1 small bunch fresh chives (for 1 tablespoon chopped)
• 3 large sprigs fresh parsley (for 1 tablespoon chopped)
• 1 tablespoon prepared English mustard, such as Coleman's
• 1 teaspoon kosher salt, plus more as needed
• 1/2 teaspoon freshly ground black pepper
• 1/2 packed teaspoon freshly grated nutmeg
• 1/3 cup all-purpose flour
• 1 cup panko breadcrumbs
• 6 cups (48 ounces) vegetable oil, for deep-frying