I have about ten statuses and ten columns on the Kanban board in Jira. It makes the text in tickets unreadable. Some of the columns don't have issues in them. Can I show only those columns that currently have issues?
There's no setting to automatically hide columns that don't have any issues in them, but if you're a project administrator (for the location of your board) or a board administrator, then you can configure which columns to display.
Other than that, using the zoom in/out feature of your browser might help a bit.