The game is very well-produced and consistent, and obviously fun. Good job!
If I may make a few suggestions, I think the chicken takes a long time to start running faster, and its speed could perhaps be increased a bit to make the game more fluid.
Also, I had the impression that the SPACE key has a delay. For example: I'm near a strawberry and hold down the button to eat. The chicken stretches its neck but doesn't reach it, so I try again, closer to the strawberry, and it doesn't eat it, even though it's already completely retracted. If this is intentional to make the game more difficult, perhaps it would be worth clarifying.
Anyway, everything is very good!