Lemon Pepper Leaf Potatoes

Ingredients

• 5 pounds russet or baking potatoes, scrubbed, peeled and covered with cold water
• 6 tablespoons unsalted butter, melted
• 1 ½ tablespoons plus 2 teaspoons finely grated lemon zest
• 1 tablespoon kosher salt
• 2 teaspoons freshly grated black pepper
• 2 tablespoons freshly squeezed lemon juice
• Additional melted butter
• Flake salt