Armored Elytra

A elytra and chestplate can be combined in anvil to create armored elytra which has protection of chestplate and also ability to fly with elytra, enchantments of both items are combined too, the durability of armored elytra is equivalent to elytra's durability.

To obtain chestplate and elytra back drop an anvil on the item entity of armored elytra.

Combining Chestplate with Elytra

Separating Armored Elytra