Short answer: No
Just change JAVA_HOME to /opt/zing/zing-jdk8 or PATH to /opt/zing/zing-jdk8/bin or your application specific setting to point to the Zing java executable at /opt/zing/zing-jdk8/bin/java.
In general Zing implements the entire Java Standard Edition standard. That means all fundamental command line parameters are supported per the relevant Java major level specification.
If an -XX command line parameter has no meaning in Zing (like for instance GC settings for G1 or CMS, which don't exist in Zing) then those variables are silently ignored. Many -XX parameters are implemented by Zing, for example -XX:+UseGCLogFileRotation.
With Zing it isn't expected that you need to tune or optimize any GC settings. The only parameter you might consider to change when switching to Zing is -Xmx as with Zing you are not limited to small heap sizes any more.