Remove ends from bananas. With knife, slit banana skin on back of each banana from top to bottom, but leave skin on banana to keep it from bursting. Bake bananas in their skins in 375° oven 20 minutes. Meanwhile, mix marmalade and lemon juice. When done, remove bananas from oven and discard skin. Center each banana on dessert plate. Pour 1 1/2 tablespoon sauce over each banana. Mix orange and lemon peels and sprinkle 1 1/2 teaspoons over each banana. Garnish with mint.