To install zscaler on Pop!_OS 22.04, download the connector from the admin zscaler site by clicking the Client Connector link on the sidebar, then clicking Client Connector App Store, New Releases, Linux and download 1.4.0.105.
Before installing, you must temporarily replace your /etc/os-release file:
cd /etc
sudo mv os-release os-release.old
sudo cat <<EOF >> os-release
PRETTY_NAME="Ubuntu 22.04.2 LTS"
NAME="Ubuntu"