Combine 1 1/2 cups water, raisins, and 1/2 teaspoon salt in a medium saucepan; bring to a boil. Add couscous to pan. Remove from heat; cover and let stand 5 minutes. Fluff with a fork.
Combine remaining 1/2 teaspoon salt, cumin, coriander, and pepper. Rub spice mixture evenly over lamb. Place lamb on a jelly-roll pan lined with aluminum foil. Broil lamb 10 minutes or until desired degree of doneness, turning once.
Heat a small skillet over medium heat. Add almonds to pan; cook 3 minutes or until lightly toasted, stirring constantly. Add almonds and parsley to couscous mixture; stir to combine. Serve with lamb.