quickly change windows font and back again

I have my computer plugged into my TV. I use HDMI connection. I find my system font a little small on my TV but i want to keep the current font size, while my desktop is switched over to my computer monitor. is there a way i can quickly and easily change windows font size? i have a feeling this will require at least a logoff. I know there are settings to change size of most things, including font, but that's too much trouble every time i switch back and forth. whatg would be really cool, would be if windows recognized my preference automatically, depending on which monitor i'm viewing.

Thx I'll Try that. Is there a way, i could have my icons have a text size adjustment? you can zoom and the icons enlarge, but the Text doesn't.