Teensy 4.0 fried - posting project schematic to make sure I didn't do anything wrong

[inevitable jambalaya]

Hi,

My teensy has gone to the great recycler. I think I might have accidently touched one of the u controller pins with a 9V source, but I wanted to make sure that there is nothing in the circuit design that might have caused this. I am posting the schematic in the hopes that someone will give it a quick look over and let me know if something looks wrong.

Note that the circuit worked as intended the first time, but not the second time, and between the two I did disconnect and then reconnect the 9V source.

Thanks for your help!