My Grandma's Easy Slow Cooker Chicken with Flavorful

Ingredients

• 4 boneless, skinless chicken breasts (about 1.5 lbs / 680g)
• 1 tablespoon olive oil (15 ml)
• 1 teaspoon salt (5g)
• 1 teaspoon black pepper (5g)
• 1 tablespoon dried thyme (6g)
• 1 tablespoon dried rosemary (6g)
• 1 tablespoon dried parsley (6g)
• 1 medium onion, chopped (150g)
• 3 cloves garlic, minced
• 2 large carrots, sliced (250g)
• 2 ribs celery, chopped (150g)
• 1 cup chicken broth (240ml)
• Juice of 1 lemon