Begin by placing the chicken breasts in your slow cooker in a single layer.

In a medium bowl, combine pineapple juice, brown sugar, soy sauce, crushed pineapple, minced garlic, and ground ginger. Whisk together.

Pour the sauce over the chicken breasts in the slow cooker.

Cover the slow cooker and set it to cook on low for 6-7 hours or high for 3-4 hours.

Once cooking time is up, remove the chicken and set aside. Whisk together cornstarch and water to form a slurry.

Stir the slurry back into the remaining sauce and cook on high for an additional 10-15 minutes until thickened.

Return the chicken to the slow cooker and allow it to soak up the thickened sauce for another 10-15 minutes.

Transfer the chicken to a serving dish, drizzle with the sauce, and garnish with green onions and sesame seeds.