Place cut chicken in pressure cooker with vegetable or chicken broth. Click pressure cook or manual and set for 25 minutes if thawed and 30 minutes if frozen. Set valve to sealed. Quick release pressure when time is complete. Remove chicken and drain liquid. 

In a bowl, mix in pineapple juice, soy sauce, tomato sauce, brown sugar, ginger, and garlic. Whisk well.

Set instant pot/pressure cooker to saute mode. Pour in mixture and stir well over chicken. The sauce will thicken over chicken. Top with pepper.

Use pineapple and pineapple juice from the can for your pineapple. Pineapple for garnish and juice for the recipe.

Once sauce is thickened around the chicken shred chicken and place in bowl over rice. Garnish with spring onions.