I power mine with 3.3.  It’s a generic ESP32 Dev board with a pair of 18650 cells fed to a vanilla breadboard regulator and thence to the 3v3 input pin.  Seems to work fine with enough power left over to run a MCU6050 and an OLED display.
Image here, although it may not be visible.  I’m new at this Forum business ….

Hi.
Yes, you can power the ESP32 using the 3.3V pin.
Regards,
Sara

Hi Evan.
To share a picture you need to share a link to where the picture is hosted. It can be google drive, dropbox, imgur or other.
Regards,
Sara

See if this works …

Nope.  Maybe this …
 
https://drive.google.com/file/d/1UqgPfQQHljQk_PAYRJ_CYVZpRUz5d10_/view?usp=sharing

Thank you, Evan and Sara

Thanks for sharing your picture, Evan. I can never get such clean breadboard circuits. It looks great!