Twenty Seventeen Options Disappear

I had the WordPress Twenty Seventeen theme with the Two Column layout. I added a child theme and then wanted to change to the One Column layout but the “Appearance > Customize > Theme Options” menu item wasn’t there. To fix, I reset my theme to the standard Twenty Seventeen (non-child) theme, set the “Appearance > Customize > Static Front Page” option to “A static page.”  I then re-enabled my child them and the “Theme Options” menu item was visible from the child theme.  I think I did set it to the “One Column” layout while the parent them was activated too, but not sure if that matters or not.