Take flour in a mixing bowl. Knead a soft but firm dough. Cover it and rest it for 15 minutes.
While the dough is resting, prepare the marinate.
Heat 1 tablespoon of oil in a pan. Add besan (gram flour). On medium heat, constantly stir and cook it till the flour changes colour slightly. Don't leave it unattended. It can burn in no time if the heat is high or if it is not mixed continuously.
Remove this mixture to a mixing bowl and let it cool for a minute.
Now, add yoghurt, salt, turmeric powder, red chilli powder, coriander powder and garam masala.
Add chopped green chillies, ginger-garlic paste, kasuri methi (dry fenugreek leaves), chopped coriander leaves and lemon juice.
Mix well.
To this, add the chopped chicken breast pieces. Mix well and rest it for about 15 minutes.
While the chicken is resting, chop and ready the onions and lettuce.
Also, mix fresh cream with mint chutney and/or mint chutney powder and keep it aside.
Check the dough. Knead it once again.
Now, roll small portions of the dough, (as thin as possible) and cook them on a tawa/flat base pan. You can apply oil on the surface if you wish.
Make all the rotis. Cover with a cotton cloth and keep them aside till further use.
Move on to cooking the chicken. Heat 1 tablespoon of oil.
When the oil starts smoking, add the marinated chicken.
On high heat, cook it. Once done, remove it to a bowl.
Now start assembling the roti rolls.
Take a roti. Apply some cream and mint mix.
Then put some cooked chicken, sliced onions and chopped lettuce.
Fold the roti however you like and serve.