I have a page - similar to a wiki page - that contains descriptive information in paragraph form as well as a side bar with labels bits of information. This is a good example, the right size information bar. All the labeled bits of information; could I label that as "Discrete Data" or "Discrete Information"? Is there a more correct term for it?
No, "discrete" is not an appropriate description. "Discrete" means:
discrete — consisting of or characterized by distinct or individual parts
With regards to data, discrete data means data that takes a very specific form:
discrete data — Data that can only take certain values. For example: the number of students in a class (you can't have half a student).
This is a technical term and it would not apply to your usage.
I definitely agree with MrHen that discrete is not the right term because it has a very technical meaning that your example does not seem to qualify for.
If I had to come up with a title based on your example I would use a term like Specification Data or Specification Information.
If you are looking for something shorter maybe the abbreviated Spec Data or Spec Info.