Chicken & Leek Stew

1 Tbs olive oil
1 lb boneless, skinless chicken thighs
2 carrots, chopped
2 stalks celery, chopped
1 yellow onion
1 bunch leeks. chopped
1 package Halladay's Chardonnay seasoning
6 cups chicken stock
1 pint half and half
salt and pepper, to taste
Heat olive oil in a skillet over medium-high heat. Add chicken browning for about 2-3 minutes per side. Remove the chicken and set aside. Add the carrots, celery, onion, and leeks; sauté until just tender, about 5 minutes. Place all ingredients in your Instant Pot for 45 minutes on the pressure cooker setting, let pressure release naturally.