You can disable specific items in a PowerApps gallery by using a workaround. First, group all the controls in the gallery and reference ThisItem to create a condition for the specific item you want to disable. Then, create a variable to store the selected item and use it instead of the gallery.Selected property. Similarly, replace ThisItem.IsSelected with the variable to remove the default styling of the gallery. By bypassing the default functionality of the gallery and using the variable, you can make certain items unselectable.
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