How do I disable the three finger double tap to zoom gesture? On my macbook, when I double tap with three fingers, the screen zooms in (same as the accessibility zoom), and this type of zoom zooms in the entire screen. How can I turn this off?
The three finger double tap to zoom is controlled in System Preferences > Accessibility > Zoom > Advanced > Controls.  I suspect you have the "Use trackpad gesture to zoom" enabled.  Untick it!