I'm sure you've heard this question posed.
More often than not it is more of a statement than a question and contains the underlying suggestion that this is a conundrum or problem for which there is no answer.
To the natural or humanistic mind it may pose a problem but to those who believe in Almighty God who is the creator and sustainer of all life it has a very simple solution.
God tells us in Genesis chapter 1 that He made all plant life with their seed in them and in like manner He created all animal life after their own kind and instructed them to propogate and fill the earth.
We know that ever since, from the chicken comes the egg and from the egg comes the chicken!!
God created the chicken with the egg inside!!
How simple yet how marvellous!!