Changing 1 back to 0 again, allowed me to view BS settings again, but still https://localhost:3000 is deemed insecure on Chrome and Firefox.
if (url.parse(target).protocol === 'https:') {
process.env.NODE_TLS_REJECT_UNAUTHORIZED = 0;
config.proxyUrl = config.proxyUrl.replace('http:', 'https:');
}