Have you tried "preferences => user interface => theme" to change the general font there?
If there is nothing, you will have to edit the X11 preference files for NX directly.
Production: NX10.0.3, VERICUT 8.2, FBM, MRL 3.1.7 | TcUA 10.1 MP7 Patch 0 (10.1.7.0) | TcVis 11.4
Development: C (ITK), .NET, Tcl/Tk Testing: NX12.0 | AWC 3.4 Preparing: NX12.0
Employees of the customers, together we are strong
How to Get the Most from Your Signature in the Community
NX Customization - Best Practice Guide
Hello, you have everything fine with fonts)
What to do with these giant fonts? Tried to change in X11 a config, but probably something I change not there or not so ..
Linux Mint 18, Siemens NX PLM 12