How to magnify in Chrome without scaling the page?
If you are on a Windows PC, then use the magnifier. Press Win++ to turn it on, Win+ESC to turn it off.
Note that it works globally not just Chrome.
OR
You can install Magnifying Glass (Hover Zoom) an extension
that enables you to magnify a portion of a webpage with click of a button. Press on the toolbar button to see the magnifying glass on the current page.