It’s not on the front comments page, but it is on the my comments page—and also on a thread from March 5th that I just tried.
The recent FReeperthon announcement caused some replies to be in standard text and some replies to be very teeny on Android devices using Chrome.
I don’t think that’s the same thing you have going on with a Windows laptop. With my Windows laptop, FR on Chrome naturally gives very small text, but you can increase the size of the text by holding down Ctrl and pressing +. Every time you press +, the text will get larger. Pressing Ctrl with - makes the text smaller, and Ctrl with 0 [zero] puts the text back to the original size.
Will that fix things for you?