Cook the orzo according to package directions, omitting salt and fat. Drain; rinse with cold water. Combine orzo, spinach, and next 4 ingredients in a large bowl.
Drain artichokes, reserving marinade. Coarsely chop artichokes, and add artichokes, reserved marinade, and 1/2 cup of feta cheese to the orzo mixture, tossing gently to coat. Sprinkle each serving with remaining feta cheese. 4 servings.
*We prefer Progresso marinated artichoke hearts for this recipe.