Fun idea and approach to the theme here! Probably the most unique of the "you're invincible, protect the thing" concepts I've seen in the jam.
The gameplay was fun, but I did find that the best approach was just to get right underneath the heart and swing my weapon around at anything approaching, so that being the optimal strategy caused there to be less movement than I think you probably envisioned? I also agree with those saying the flying soda bottles were really fast and hard to react to in time. I got to the final boss, but when I jumped up to try to save the heart, I kept hitting the bottom of it and falling back down and the heart died too fast for me to figure out the fight.
I really liked the visuals and art direction here. The main menu was awesome for the concept and everything had a wacky Super Meat Boy type of vibe that really worked well. Awesome job on that aspect. If you work on this any further, some more particle effects, screenshake, etc when you take down the food would be welcome upgrades to the overall look.
Great work!