1. In a mixing bowl, combine pineapple chunks with juice, soy sauce, brown sugar, and minced garlic.
2. Add chicken breasts to the bowl and marinate for at least 30 minutes.
3. Heat olive oil in a skillet over medium heat.
4. Cook chicken breasts in the skillet until golden brown on both sides, about 5-7 minutes per side.
5. Pour the marinade into the skillet and bring to a boil. Reduce heat and simmer until chicken is cooked through and sauce is thickened, about 10-15 minutes.
6. Serve hot with rice or your favorite side dish.