Instant Pot Lemon Garlic Chicken

boneless chicken thighs (skinless or with skin)*

sea salt and pepper,

garlic powder

olive oil

butter, divided

small onion, chopped

garlic cloves, sliced or minced

Italian seasoning

Juice and zest of one lemon

homemade or low sodium chicken broth

Chopped fresh parsley and lemon slices for garnish, if desired