If that is outside, chicken wire will not protect them from predators, they need half inch metal hardware cloth.
I think I would bring them in at night until the metal hardware cloth was set up. I used to also run two strands of electric around the pen at night. Their night pen is now in the walkout basement, so I just need to be careful to keep the basement door closed during the day so no predators walk in and wait.
Yes, I have a very active imagination. But these things can happen.
Good for you!
It's best, I feel, to anticipate much worse predator pressure than you get. There may be weeks that go by with not a sign of anything. Then one night, there they are, and they have all night to try to get through the defenses.
A one-inch gap is opportunity enough for a raccoon to reach in. My ducks like to sleep against the fence!