Pretty neat! I got a high score of 7 before my pizza went cold.
At first I was a bit confused about the triangle and where it points to, but over time I got used to it. I think the difficulty scaling was probably a tad harsh. By the time I got to the 7th pizza it was probably actually impossible to deliver it on time.
Overall though it's some pretty nice mechanics! Very good for your first 3D project! Well done!