In a medium bowl, toss together the chicken, onion, coriander, and raisins. In a small saute pan, heat the oil over medium heat. Add the curry powder and stir for a minute or until fragrant. Remove pan from the heat and let the flavored oil cool.
In a small bowl mix together the curry oil, mayonnaise, lime juice and chutney. Gently fold the chicken mixture into the flavored mayonnaise. Add the nuts, if desired. Serve on a bed of lettuce or in a pita sandwich.
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