Put all the ingredients for chutney with a few tablespoons of water into a blender and blend into a smooth paste.Saut onions till they turn glassy (I prefer the onions a bit chunky as it gives a nice bite to the sandwich). Deconstruct the rotisserie chicken into bite size pieces, Add it to the onions and saut well.
Add the spices and salt and saute well. It's important to roast the spices well till they lose their raw taste. Garnish with chopped coriander. Let this mixture cool. Add the mayo to the cooled chicken and mix well. You could add some nuts/ dried fruits for a crunch at this stage like slivered almonds or dried cranberries.
We prefer to use ciabatta rolls, to whole wheat bread slices. Apply coriander chutney on to the slice along with a generous portion of the chicken mayo mixture. I prefer to use medium cheddar cheese slice, provolone/ spicy pepper jack is also a good option.Place the sandwich in a panini press and cook till the cheese melts and the sandwich is crispy but not too tough. Enjoy with your favorite salad.
