Chicken Mushroom Stew

Ingredients

• 6 boneless skinless chicken breast halves (4 ounces each)
• 2 tablespoons canola oil, divided
• 8 ounces fresh mushrooms, sliced
• 1 medium onion, diced
• 3 cups diced zucchini
• 1 cup chopped green pepper
• 4 garlic cloves, minced
• 3 medium tomatoes, chopped
• 1 can (6 ounces) tomato paste
• 3/4 cup water
• 2 teaspoons each dried thyme, oregano, marjoram, and basil
• Chopped fresh thyme, optional