Chicken and Pear Sandwiches

Ingredients

• • 1 celery stalk, chopped
  • 1 pear, ripe but firm, diced
  • 1 green onion, chopped
  • 2 tbsp basil leaves, finely chopped, plus more for serving
  • 2 tbsp mint leaves, finely chopped, plus more for serving
  • 1 lemon, zest finely grated
  • 1 tbsp (15 ml) lemon juice
  • 1/2 cup (125 ml) 11% plain yogurt
  • 1 tbsp (15 ml) vegetable oil
  • 1 tbsp (15 ml) whole-grain mustard
  • 1 cup (170 g) cooked chicken, diced
  • 2 ciabatta baguettes, halved horizontally (mini baguette format, each 9 inches/23 cm long)
  • 4 leaves Boston or curly-leaf lettuce