Within nuxt.config.ts, add something like that and extend it to your needs:
app: { head: { charset: 'utf-8', viewport: 'width=device-width,initial-scale=1.0', title: 'Amazing Website', link: [ { rel: 'icon', href: './images/icons/favicon.png' } ], meta: [ // <meta name="description" content="My amazing site"> { name: 'description', content: 'My amazing site.' } ], } },