Pesto Chicken Sandwich

Ingredients

 * 1 tablespoon olive or vegetable oil
 * 1 medium stalk celery, chopped (1/2 cup)
 * 1 cup cut-up cooked chicken
 * 1/3 cup basil pesto
 * 1 package (8 ounces) ready-to-serve pizza crusts (6 inches in diameter)
 * 2 tablespoons freshly shredded Parmesan cheese
 * 1/2 cup shredded lettuce

Directions
Heat oil in 10-inch skillet over medium-high heat.  Cook celery in oil 4 to 5 minutes, stirring occasionally, until crisp-tender; reduce heat.  Stir in chicken and pesto.  Cook, stirring occasionally, until hot. Spoon chicken mixture onto pizza crusts. Mix cheese and lettuce; sprinkle over chicken mixture.  Cut each pizza crust in half.
 * Makes 4 servings