Preheat oven to 375°. Crush croutons into fine crumbs. Add 1/2 cup picante sauce and 1 tablespoon orange juice concentrate; let stand 10 minutes., Stir in 2 tablespoons cilantro, egg and salt. Crumble chicken and chorizo into crouton mixture; mix lightly but thoroughly. With wet hands, shape into 1-in. balls. Place on a greased rack in a 15x10-in. baking pan. Bake until a thermometer reads 165°, 15-20 minutes., Meanwhile, in a small saucepan over medium heat, stir together marmalade, pepper jelly, remaining picante sauce and remaining orange juice concentrate. Bring to a boil. Reduce heat; simmer 5 minutes. Stir in mango, 1 tablespoon cilantro and, if desired, 1/3 cup pomegranate seeds. Pour sauce over meatballs. Serve with remaining cilantro and, if desired, pomegranate seeds.