Using red series double fan switch for a regular double switch?

I have a double paddle switch in a 1 gang box. Could I perhaps use the red series light + fan controller switch in its place to control the two light circuits connected to it now?

I don’t think so. The fan portion of the light + fan controller is only really used for RF commands. You don’t wire it up with a 3 wire like you would if you had a separate fan switch.