brent
My 1GB EFI Partition is 38% full.
Is this considered normal?

    zmaint

    sudo clr-boot-manager list-kernels

    gives me the following output :

    * com.solus-project.current.6.12.19-315
  com.solus-project.current.6.12.17-314

    is this considered normal?

      Yes to both.

      The cases I have seen with a full EFI/boot partition is because of a combination of these things:

      1. They did not follow the recommended 1GB minimum advice.
      2. They have installed -current and -lts kernels.
      3. They multi-boot with multiple different operating systems each of which will take up their own space in the partition.