Place first 5 ingredients in a Dutch oven over medium-high heat; bring to a boil. Reduce heat, and simmer 20 minutes. Discard bay leaf and cinnamon stick. Set lentils aside.
Preheat oven to 450°.
Place the eggplant, onion, and thyme in a 13 x 9-inch baking dish. Drizzle with oil; toss to coat. Bake at 450° for 30 minutes, stirring after 15 minutes. Stir in 1 cup broth; bake 10 minutes. Discard thyme; add eggplant mixture to lentils.
Stir in remaining 3 cups broth and parsley; bring to a boil over medium-high heat. Cover, reduce heat, and simmer 10 minutes. Remove from heat. Add spinach; stir gently until spinach wilts. Stir in salt and pepper. Ladle about 1 cup soup into each of 8 bowls; drizzle each serving with 1 teaspoon pomegranate molasses, and top with about 1 tablespoon roasted red bell pepper.
Wine Note: One wine works well with the earthy, bitter, and sweet flavors in this soup: pinot noir. Good pinot noir demonstrates an earthiness of its own, plus an attractive bitterness and a sweet spot of cherry-pomegranate fruitiness. Try Pedroncelli F. Johnson Vineyard 2003 from Sonoma County, California ($15). -Karen MacNeil