CONNECT 2 MONITORS TO MACBOOK AIR USB C MAC OS X
What is a Hackintosh computer A Hackintosh (a portmanteau of Hack and Macintosh) is a computer that runs Apple’s Macintosh operating system macOS (formerly named Mac OS X or OS X) on computer hardware not authorized for the purpose by Apple. The LG UltraFine 5K Display provides up to 85W of power over USB-C and will fully power MacBook Pro (2016 and later) and MacBook Air (Retina, 13-inch, 2018) using the included Thunderbolt 3 (USB-C) cable. The answer to the question in the title is, yes you can use pretty much any USB C output and charger to charge a MacBook Air/Pro.
So you have connected two external display to either a hub or an HDMI splitter. Connect a USB-C display: Connect the display to a Thunderbolt / USB 4 port on your MacBook Air.