One Pan Creamy Chicken and Rice

chopped yellow onion ((1 small))

sliced carrots ((about 2 medium))

sliced celery ((about 3 stalks))

olive oil, divided

lbs trimmed boneless, skinless chicken thighs, (cut into 1-inch pieces)

minced garlic ((3 cloves))

long grain white rice

low-sodium chicken broth

minced fresh thyme or rosemary

Salt and freshly ground black pepper

frozen petite peas

heavy cream

finely shredded parmesan cheese

minced fresh parsley