What's the proper name for the 'Food Bars'

Solution 1:

There are multiple names.

Here are some of the names referenced on the Minecraft Wiki. First, is "Hunger Indicator".

The hunger indicator is shown above hot bar, to the other side from health indicator.
_{^{- Hunger - Minecraft Wiki}}

To me this name seems the most fitting, seeing as it matches the "Health Inidcator".

Next, we get two in one: the hunger bar / food bar.

The player's hunger value is shown on the heads-up display in the form of a hunger bar (also called food bar)
_{^{- Hunger - Minecraft Wiki}}

After reading this, I realised that the "Health Bar" has multiple names, so any of these names listed above are acceptable.

_{Note: there are probably several other names for this, these are all the ones that i found}

Solution 2:

It's either hunger value or food bar. I've taken this from jeb directly and the wiki.