We hatched our own chicks in April 2011 and got one with a crooked beak. As the months went by the beak got worse despite regular trimming at the vet (you can buy a dremmel at Home depot and do it yourself) and she was unable to feed herself so we took to syringe feeding her 3 times a day with Lafeber's Nutritional Support (only available via a vet) and organic baby food, peaches, green beans, peas etc. She would be waiting at the back door for us to feed her. We'd open the door and she'd walk right in through the garage and into the kitchen and would squawk like crazy if we were running late! My family and I loved that little hen but we sadly had to put her to sleep when her crop just seemed to stop working and she began to not want to be fed anymore. Prior to putting her to sleep (at the vet) she suffered sour crop and impacted crop which we got her through eventually with olive oil, massaging and yogurt. She was just short of a year when she died. It was an incredibly sad day, my kids and I buried her with a peach tree in the yard.
I guess it's a personal choice on wether to keep your crooked beak. We felt responsible because we hatched ours so felt we had to do everything we could for our little Ronald (my kids named her after their granddad as we thought she was a roo). It was a lot of work syringe feeding and we sometimes missed her beak and would then have to wash her chest feathers etc so as to stop the other chickens picking her feathers out, but it was worth it for us because we loved her so. Good luck!