Ninja ‎BN800UK 3-in-1 Food Processor With Auto IQ

Never done this but it does make lumpy soups smooth so should probably work

Have only used this for ordinary dough but can't think chapatti should be different. From experience, I have found that when using a processor to knead bread, use less water than is suggested in the recipe - you can always add more if the mixture is too dry. If you use the same amount of water as for a hand-knead, you'll end up with very sticky dough and end up adding more flour, which is not recommended.

I sometimes let it run it’s course but say I wanted some thing lightly chopping will just stop it manually.