Unfortunately, as of my current knowledge, there seems to be no feature available to directly adjust the width of columns or panels within the Google Analytics 4 interface. The Google Analytics interface doesn’t provide an option for manual adjustments to column widths. However, you could consider exporting the data to a CSV file, where you could adjust column widths manually. Additionally, if you’re trying to analyze URL data, consider using a secondary dimension to split the URL between hostname and path, making it easier to read.