Hello @Assaf Katz ,
Can you try upgrading your nodes to latest image.
https://learn.microsoft.com/en-us/azure/aks/node-image-upgrade#:~:text=To%20speed%20up%20the%20node%20image%20upgrade%20process%2C,be%20used%20for%20upgrades%20so%20they%20complete%20faster.
Example Command:
az aks upgrade \
--resource-group myResourceGroup \
--name myAKSCluster \
--node-image-only
Regards,
Shiva.