Is the Easter Bunny pagan? Probably not. It seems to have been invented by German-speaking Protestants sometime in the 1600s.
Bibliography:
Stephen Winick, “Ostara and the Hare: Not Ancient, but Not As Modern As Some Skeptics Think,” Library of Congress Blogs, April 28, 2016.
Stephen Winick, On the Bunny Trail: In Search of the Easter Bunny, Library of Congress Blogs, March 22, 2016
The video goes into this somewhat, but mostly focuses on the folklore surrounding the Easter Bunny. It’s speculated that it possibly originated from a springtime children’s game in Germany sometime in the 1600s. However, much is unknown.