Tuna Chickpea Pitas - Half Cup Habit

Ingredients

• 1/2 cup yogurt (whole milk or Greek)
• 3 tbsp lemon juice
• 2 tbsp tahini
• 1/4 cup parsley (chopped)
• 1/2 tsp salt (sea)
• 1/2 tsp pepper (black)
• 2 5 oz can tuna (white albacore; drained)
• 1 15 oz can chickpeas (rinsed and drained)
• 1/4 cup onion (red; diced)
• 2 stalks celery (diced)
• 2 cups tomatoes (cherry; halved)
• 2 cups arugula
• pita bread (whole wheat)