Preheat an oven to 350°.
Combine first 5 ingredients in a small bowl; set aside.
Combine 1/2 cup Marsala, honey, 1 tablespoon butter, rind, and 1 teaspoon spice mixture in a small saucepan. Heat over medium heat until butter is melted.
Place pear halves, cut sides up, in a 13 x 9-inch baking dish coated with cooking spray. Pour Marsala mixture over pears. Bake at 350° for 30 minutes or until pears are tender, basting occasionally. Remove from oven; keep warm.
Combine 6 tablespoons Marsala, 1/4 cup sugar, water, salt, and egg yolks in a medium, heavy saucepan, stirring with a whisk. Cook over low heat, whisking constantly, until mixture is thick (about 5 minutes). Stir in remaining spice mixture and 1 teaspoon butter until blended. Place 1 pear half in each individual bowl. Spoon 1/4 cup sauce over each pear half. Garnish with lemon zest and nutmeg, if desired. Serve immediately.