My Grandmother's Savory Crock Pot Chicken Thighs

Ingredients

• 4 boneless, skinless chicken thighs (about 1.5 lbs / 680 g)
• 2 tablespoons olive oil (30 ml)
• 3 cloves garlic, minced
• 1 large onion, diced
• 1 teaspoon salt (5 g)
• ½ teaspoon black pepper (2 g)
• 1 tablespoon fresh rosemary, chopped (15 g)
• 1 cup low-sodium chicken broth (240 ml)
• Juice of 1 lemon
• Zest of 1 lemon