Chicken spinach soup with rice and lemon (without a book)

Ingredients

• 2 Tablespoons of vegetable or olive oil
• 1 medium onion chopped
• 1 medium zucchini (6 ounces) cut into medium dice
• 1 bag (10 ounces) of prewashed spinach, stemmed as needed
• 1 libra. boneless, skinless chicken thighs (about 6)
• 1/2 cup of long grain rice
• 2 cans (16 ounces. each) or 1 carton (32 ounces) reduced sodium chicken broth
• 3 tablespoons of juice from medium lemon
• Herbs, spice or flavoring of choice
• Salt and ground pepper