The igniter on the right front burner of my GE Gas Cooktop

the very first thing i would do here is to check the ignitor itself
under the head cap you should see two screws, once those are out you will be able to lift the burner plate, lift the burner plate, you will see, or should see the ignitor, and the wire.
i check this for voltage by unplugging the ignitor and olding the wire close to a ground, the metal body is good. Turn on the ignitor, becareful it is live. yhou shgould see a spark comming from the wire
if not check to make sure that wire is in position and on the spark module
if you do see a spark this way, just order the replacement ignitor
and install it when it arrives
appliancepartspros.com
part number AP3191250