Rub chicken with olive oil and place on a foil lined baking sheet. Sprinkle with kosher salt and pepper and bake until cooked through. Set aside to cool.
Cube cooled chicken. In a large bowl, combine mayonnaise, sour cream, grapes, apple, raisins, and craisins. Add chicken and stir to combine. Adjust seasoning with salt and pepper to taste. Chill until ready to serve.