always nice to see a game with the coyote jump :)
I wish you also added a double jump, dash and "just in time" jump kinda (when you press jump slightly before you landed) These would make game feel more agile mechanics wise and will allow player to experiment with the solutions.
Regardless of these nit-picks the game is free from bugs and feels nice :)
Also a fun take on a theme with the egg fighting chicken :) Though I found shooting was unnecessary to reach the boss. I think if you add more mechanics and platforms variety the game will be really fun to play. Especially with the minimalistic approach you are taking with the art style.