In Jupiter X, when you hover over a product image, it will be magnified by default.
Image Zoom is a feature which has been added in Jupiter X, but you can disable it to prevent the Image Zoom in product pages.
In order to disable Image Zoom in a Single Product page:
1. From WordPress left menu go to Jupiter X > Customize.
2. In Customizer, click on Shop > Product Page
3. Disable the Image Zoom option.
4. Publish the changes.