Which came first, the Christian or the egg?

Actually when it comes to this holiday we are currently celebrating, there appears to be some confusion. What’s with the eggs? Why do we commemorate the killing and resurrecting of Christ with egg shaped chocolate? What’s the link? Wouldn’t chocolate nails and thorny crowns be more in keeping with the weekend that’s in it? Chocolate crosses?
They’d be easier to eat as well. You could just snap a bit off, rather than having to crack a chocolate egg open and have splinters of it melting in your lap. And for the horizontally afflicted, chocolate nails would be far less calorific than ostrich sized chocolate eggs full of more chocolate. It’s baffling, this egg thing. Which came first, the Christian or the egg? Is it really all about Ishtar?