This vendor selling the mixture is from Bengal.
This street snack from Gujarat comprises of various spices and condiments and also a chivda or papdi mixture.
The tomato sauce, green chillies and onion can add a lot of taste to the chivda flakes which are probably made of gram flour or besan.
Here on a Puducherry beach there is some mixture which is mixed with grated raw mango and peanuts to make a tasty snack. And of course red chilly powder and other spices are used to make it tasty.