Ingredients

3 stalks celery, 1 coarsely chopped and 2 thinly sliced

1 medium sweet yellow onion, coarsely chopped

1 carrot, coarsely chopped

2 sprigs fresh thyme

1 1/2 teaspoons salt, plus more for seasoning

2 (12 ounces total) boneless, skinless chicken breasts

1/3 cup mayonnaise

1 tablespoon fresh lemon juice

1 teaspoon Dijon mustard

Freshly ground pepper

1/2 cup slivered almonds, toasted

1 cup (from one 11-ounce can) canned mandarin orange segments

8 (6- or 8-inch) pita breads

8 lettuce leaves

Preparation

Bring 2 cups water, chopped celery, onion, carrot, thyme, and salt to a boil in a medium saucepan. Reduce heat to a simmer. Add chicken; cover and simmer until cooked through, about 15 minutes. Transfer chicken to a bowl; let cool, then shred with 2 forks. Discard contents of pan.

Stir together mayonnaise, lemon juice, and mustard in a medium bowl. Season with salt and pepper. Stir in chicken, sliced celery, and almonds. Gently fold in orange segments.

Cut 1 inch from top of each pita to open pocket. Fill each pita with 1 lettuce leaf and 1/2 cup chicken salad.