Yes, it is possible to use a food processor.
Stop the machine as soon as the dough comes together and forms a ball. Remove the dough from the machine and knead it a couple of times with your hands to form a ball. Let the dough rest for at least an hour before making the chapathis in the usual way.

anything is possible , but beware!!, its at the risk of ur food processor’s life.

better put on ur gloves and do some work

wisdom girl is right.