Hi Lance,

That is definitely the problem with particular font you are using for text.
From your screenshot I see that there is a problem with text kerning - distance between letters in PDF is bigger than in the drawing. Looks like PDF printer you are using to output to PDF from AutoCAD cannot create correct kerning for the font you are using.
Can you say what TTF font you are using for that text? Is it one of the standard macOS fonts or you added it to the system yourself?