Easy Instant Pot Chicken Fettuccine Alfredo

Ingredients

• 1 tablespoon olive oil
• 2 chicken breast (about 1.5 pounds)
• salt
• pepper
• 1 quart chicken broth (4 cups)
• 1 pint heavy cream (2 cups)
• 2 teaspoons garlic powder
• 1/2 teaspoon salt
• 1 teaspoon pepper
• 1 pound fettuccine (16 oz box)
• 8 oz freshly grated parmesan cheese (1 cup)
• 4 oz cream cheese (optional)
• fresh chopped parsley for garnish (optional)