Chicken, Grapefruit, and Raisin Salad

    6 ounces grilled chicken, cut into strips
    11 cups arugula, coarsely choopped
    1 ruby grapefruit, divided into sections
    1 cup carrots, grated
    2 cups cherry tomatoes, halved
    2 tablespoons raisins
    2 teaspoons extra-virgin olive oil
    Lettuce
    Lemon juice
    Salt

Soak raisins in cold water to soften. Mix all ingredients in a salad bowl; toss with the olive oil, lemon juice, and salt.