How to decrease the font size / zoom out in Chrome on a mobile device

I prefer very small fonts: on my MacBook I use full retina 2560x1600. My iPhone7 Plus can show a lot - if I can force chrome to stop making huge fonts on it. But how to do that? The desktop chrome allows to decrease magnification by hitting Command-Minus. There is no keyboard on the iPhone so then .. what is the equivalent?

By the way I already have the Text Size slider set to absolute smallest in the general Settings| Text Size

Try enabling “Text Accessibility”

1. Type chrome://flags into a Chrome tab.
2. Search for "Enable text accessibility in web pages"
3. Select "Enable"

Force quit Chrome and restart.

Answer sourced from a Google help page about the same topic.