Instant Pot Creamy Tomato Chicken

Ingredients

• 1½ pounds chicken breast
• 2 teaspoons butter ((divided))
• 1 teaspoon olive oil
• 1 onion (chopped)
• 1 Tablespoon garlic (minced)
• ¼ cup white vinegar
• 2 cups tomato sauce ((without salt))
• 1½ teaspoons Italian Seasoning
• ½ teaspoon paprika
• ½ teaspoon pepper
• ½ teaspoon salt
• ½ cup heavy cream
• 1 bunch green onion (finely sliced)
• ½ teaspoon Italian seasoning
• ½ teaspoon garlic powder