Hi,
We had the same situation and here is my experience. Buddy was born with a cross or sissor beak. You CAN do something about it IF you do it now, if you wait too long, it cannot be corrected. We brought him to a pet store owner who had birds and he said they can do something, so ask at your local bird loving pet store ( charged me 10.00 only!) or take to vet. There must be a brace. It depends on how much investment you want to put into the bird. We were too late with buddy, his beak was already too deformed. We put tons of effort and love into getting food into him and he rewarded us by his unusual, loving behavior. He did NOT act like a chicken at all, he followed us around and he literally jumped up on our shoulder like a parrot and stayed there as long as we allowed him to! He also did a 100 things that normal chickens never do. As you can tell we LOVED him! LOL We bought chick grow, chick quick and made him a mash 2x a day. He lived only about 9 months, but he will never be forgotten. God gives special qualities to deformed animals ( and humans!) to make us love them. He died in the coldest part of the winter, he was just not getting enough to stay alive. So, I would do the brace, or prepare for the worse. I still cry when I remember buddy. Good luck!