Graph Labels NOT Showing Correctly

Having issues with the titles (X-Axis) and (Y-Axis) in my graphs not working properly. I have it set in a Python script to make it "KWH_USAGE" but when the graph is created - it shows "kwh_usage"... Why is it only showing everything as lower case?

Also - I want to include the data from a specific field in a feature class to show in the title. So if I have 14884512 in a field called "TWACs_Number" - I want the title to include that. How would I write that?

Thank you