Instant Pot Chicken Corn Chowder

Name: Instant Pot Chicken Corn Chowder
Ingredients: 6 slices (6-ounces) thick-cut bacon, chopped; 1 small yellow onion, diced; 3 cloves garlic, minced; 1 pound boneless, skinless chicken breast, diced; 3 1/2 cups (about 17 ounces) frozen corn kernels; 4 cups chicken broth; 1 pound Yukon Gold potatoes, cut into 1/4–1/2” chunks, skin on; 1/2 teaspoon kosher salt; 1/2 teaspoon coarsely ground black pepper; 2 tablespoons cornstarch; 1 1/2 cups milk; 3 green onions, sliced (optional); Half-and-half (optional)