I've had this problem with Alfie previously and have had to take him to the vet a handful of times to get it trimmed/filed back so it can grow straight again. I keep a very close eye on it and if one side looks to be growing out again I take him back to the vet. Alfie has got better at keeping it in check himself so it's usually a good few years between vet visits. I reckon he's been three or four times over the years.
Definitely worth getting it checked out by a vet and trimmed back if it's starting to get bad. Depending how crooked it gets it could impair his ability to eat, drink and move around (as they use their beaks like a third hand for climbing!)
The first vet I took Alfie too many years back gassed him for the procedure. The vet I take him to now doesn't use gas, he just towells him and gets on with it. He said he uses a water drill, so Alfie gets a little soggy during the procedure. He is then allowed to fly to the nearest veterinary nurse to get away from the big mean vet before going back in his travel cage. 😂 Alfie reacted badly to the gas and was out of it for a good few hours and threw up - so I never wanted to put him through that again unless he was critically ill and there was no other option. Thankfully I found a better vet!