Hey @displagent 
Unfortunately, as the User Consent and Third-Party Applications states, Auth0 does not allow you to skip consent (even for first-party applications) if localhost appears in any domain in the application’s Allowed Callback URLs setting.
For local development, you should be using a separate dev tenant. You can use the Deploy CLI Tool to export/import your current tenant configuration into a new dev tenant (instead of recreating everything manually)
You can also read the dangers of having localhost in your production tenant/application in this post: Why localhost is not recommended as an allowed callback or origin for production?