Tuna Casserole with Dill and Potato Chips

Name: Tuna Casserole with Dill and Potato Chips
Ingredients: ½ cup (1 stick) plus 1 tablespoon unsalted butter, divided; 12 ounces dried curly egg noodles; Kosher salt; 1 large onion, finely chopped; 1 medium leek, white and pale-green parts only, finely chopped; 10 ounces mushrooms (such as crimini, shiitake, and/or button mushrooms), chopped; ¼ cup white wine; Freshly ground black pepper; 1 tablespoon Worcestershire sauce; 2 teaspoons finely chopped thyme; ¼ cup all-purpose flour; 2½ cups homemade chicken stock or low-sodium chicken broth; 1 cup heavy cream; 6 ounces white cheddar, grated; 2 teaspoons hot sauce (preferably Tabasco); 2 6-ounce jars oil-packed tuna, drained, broken into small pieces; 2 cups potato chips; 1 lemon; ½ cup dill, coarsely chopped; 2 tablespoons finely chopped chives