I am afraid it is totally different technologies (wifi and FPV video at 5.8 GHz).
If you want to try, you need to base on the frequency value. The wifi channel are standard:
Channel 149: 5745 MHz
Channel 151: 5755 MHz
Channel 153: 5765 MHz
Channel 155: 5775 MHz
Channel 157: 5785 MHz
Channel 159: 5795 MHz
Channel 161: 5805 MHz
Channel 165: 5825 MHz
But signal will be wifi and not FPV video modulation.
One workaround would be to use a tablet that has a HDMI output (but there is a limited choice) and connect it to the HDMI input of the monitor.