Currently it is not possible to configure the time tracking fields for the issue detail view in the Kanban Boards.

We would like to see this become possible.

I have found a couple of related posts in the community, but no actual suggestion here:

https://community.atlassian.com/t5/Marketplace-Apps-questions/Add-the-field-Original-Estimate-in-my-Kanban-List-View-to-the/qaq-p/339904

https://community.atlassian.com/t5/Jira-questions/Time-Tracking-feature-in-Jira-Agile-Kanban-Board-Issue-Detail/qaq-p/373206

https://community.atlassian.com/t5/Jira-Software-questions/How-to-display-the-Time-Tracking-fields-inside-the-cards-from-a/qaq-p/97896