Zip Archive With Limited Number of Files

find . ! -name "*.zip" -type f -print0 | parallel -0 -N 5 zip arch{#} {}

The option -N 5 limits the number of files to 5 per archive and is presented to zip in place of {}

The {#} (verbatim, not to be replaced by you during the invocation), is replaced by the job number, resulting in arch1.zip, arch2.zip etc.

The -print0 option to find and -0 option to parallel in tandem make sure that filenames with special characters are correctly handled.