Updating Table of Contents switches to a completely different font

Hello

I have this document (attached) with a table of contents that I have been trying to fix. Every time I have to update the table of contents, the table of contents would switch to Helvetica Neue that I'm not sure where it's getting at.

I have tried going into the Table of Contents settings to ensure the ToC's font properties is "Arial Narrow."

Is there some other place that I'm not looking at?

Thanks for your help