This was a cute little game. The level design was pretty well done, and for the most part the character felt pretty good to control (though a bit floaty on the jumps).
As for the primary gameplay loop, I imagine it's not fully implemented as you intended, since you don't lose if the hunger bar depletes. I will say that there isn't really a requirement for you to go and walk around, since the chickens respawn fairly quickly. Having some kind of system to avoid that (even as simple as not respawning any chickens in an adjacent area) would have been helpful in pushing players to keep moving. Better yet, if there was an end goal, and no respawning of chickens, it would in itself act as a bit of a timer.