Really nice design for the player character, I like that you represented both movement mechanics (spring jump and thrusters) visually and it felt fun to jump from platform to platform whilst grabbing all the pizza I could come across.
I will agree that the choice for controls are a bit unconventional. It also took me a while to realise that I can move around whilst charging my jump at the same time (i.e. timing the release of the spacebar whilst already having directional movement). Maybe it would be somewhat more intuitive to stop the character from moving when the space bar is pressed and then have it jump left, right or straight up depending on which key is pressed when the space bar is released?
The music and sound effects really added to the appeal of the game, I especially like the catchy music playing at the start screen.