Can I deploy my Nuxt.js website on Azure static web apps with a single command line | One Dev Question?

No, but you can do it using a Nuxt.js module. Nuxt.js is built using a modular system which makes it very easy to create modules and plugins. You can create a module, upload it to MPM, and then share it with the Nuxt.js community. Learn lots more about Azure Static Web Apps in this Microsoft Learn learning path: Azure Static Web Apps - Learn | Microsoft Docs.