One-skillet: Chicken And Spinach With White Beans

• 15 cannellini
• 10 black olives brine cured
• 4 garlic (cloves)
• 2 celery stalks
• 2 shallots
• 400 gr chicken breasts
• 280 gr tomatoes
• 190 gr spinach (fresh)
• 240 ml chicken broth
• 16 ml extra-virgin olive oil