How does one go about changing the default font size in the text fields on Acrobat Pro?
My fonts are currently very inconsistent and I want to fix that.
These are two different things. You can change the default font size by editing a field and then right-clicking the field and selecting "Use current properties as new defaults". This will not affect any existing fields, though. For that you can use a script (like this one I've developed: Custom-made Adobe Scripts: Acrobat -- Mass Edit Fields Properties ), or by selecting the fields manually and then editing their properties manually.