Facebook doesn’t want you to leave the app or website. It is slowly trying to integrate most kinds of services to become a single platform for everything. In the same development, now it has added an option to order food direct from Facebook.
Facebook has also partnered with few popular food ordering companies and restaurants for this new feature. These are the food ordering companies listed on Facebook
Flat 18% Off on Lenovo Yoga TabletsFlat 15% Off on Lenovo's most selling Yoga Tablets
So, you can use Facebook app to access restaurants nearby by visiting the Order Food section in the Explore menu. You can select from available food options and order what you want to eat. Then you can select the food ordering service for delivery.
Facebook has added the option to Android, iOS, and web. So, you can start ordering food from any of these platforms. The service is only available for US people.