Egg whites or oil can be used to keep spices on roasted nuts. This recipe looks like a good one: http://www.food52.com/recipes/2125_sweet_and_salty_spiced_nuts And you can adjust the sugar/spices as needed
The few times I've made spiced nuts of some variety the key seems to be a combination of butter and a bit of sugar to create a sticky medium to hold the spice to the nuts. Take a look at this recipe to get the general idea and maybe experiment a bit from there?
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http://www.food52.com/recipes/3140_chaat_masala_mixed_nuts
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