That was interesting.
The idea is pretty cool. Getting physically bigger. I can see that premise working well in many scenarios.
a "vehicle" that becomes larger and less responsive as the player progresses...
This can be an interesting way of applying an auto-handicap that scales with the player's ability.

The start of this game is good. But there are some things that work against the premise. The tables and chairs didn't seem to do much in terms of being an obstacle(or if it does then it wasn't obvious). And not being able to move much at all(as I got bigger) became a problem, to the point where the game is unplayable.

Considerations/Recommendation :
- Make obstacles smaller but impose a penalty.
- Build tracks with specific design including (maybe) pathways that split.
- Don't scale the character too much (bigger) and always make it possible to win.
- Make food items "pop" more visually so that they are easy to spot.
- if player, plays bad then they should shrink again, if player plays well they can grow again.
- Consider alternative win conditions, such as Reaching a certain weight, traveling a certain distance.
- IF you add a time limit to the play session, then allow sped control so that the player is urged to go faster.

I would agree with the above comment, getting bigger yourself is a really nice spin compared to what most other people are doing, but losing mobility on top of it kind of makes the game too hard after a while.
Maybe if you could see what's coming earlier you can avoid things better, but as it is now you just can't avoid eating trash sometimes.

Also did not appreciate that game over sound, ouch.

Rate some games to get more visibility, that's how Ludum Dare works. I see right now you've given 0 ratings and you're gonna struggle getting ratings if you don't give some. 20 is the good amount to get decent visibility.