Today, we can only choose one font and stick to it globally on app.
Would be nice if the menus, lists, trees, etc. kept the Windows default font and only the inspectors, etc. have a custom font.
In other words: I would like to use a cool monospaced font for input/output, inspection, etc. but a normal font for lists, menus, labels, etc.
At a minimum, Fiddler's Appearance options should offer control over the "Fixed Width" font setting used in various places.