Coffee was banned - even labelled Satanic - a number of times [1][2].

And whilst I don't know of any earthly bans on chocolate, the Aztec god Quetzacoatl was condemned by his fellow deities for sharing chocolate - reserved for the gods - with humans. They punished him by getting him drunk.

[1] http://mentalfloss.com/article/12662/5-historical-attempts-b...

[2] https://en.wikipedia.org/wiki/History_of_coffee#History