Font Awesomeicon from Icons list at
Admin Main Menu -> Components -> FW Food Menu -> Badges -> click New/Edit button
Font Awesome 5 Pro icons codes at
https://fontawesome.com/ (Icons page) to choose a matching icon for a badge. For more details read documentation (Docs).
hex colorconstant with a picker to change default icon color. By default meal badge icon will have the same color as a meal title. Hex color example: