Yes, it is possible to disable Pinch Zoom feature.|
It is not official software from Chuwi, but it is made for Chuwi Keyboard.
Touchpad Gestures Toggle Tools
First method doesn't work for disable Pinch Zoom, you need to use second method.
Please know that this tool will also disable Ctrl+Wheel Up/Down key, you can't zoom with this key.
It'll also disable other Touchpad Gestures by default,
You can re-enable it at System Tray menu if you want to.