To prepare a tarragon chicken salad beans and grains recipe, you will first need to gather your ingredients. First, gather the ingredients for the salad. You will need the following ingredients: 1 pound chicken breasts, 2 tablespoons olive oil, 1 teaspoon kosher salt, 1/2 teaspoon ground black pepper, 1/4 teaspoon each thyme and sage, and 1 tablespoon dried or fresh oregano. Toss the chicken with the oil and season with salt and pepper to taste. Add the remaining ingredients to the bowl and stir to combine.