Add corn kernels, potatoes, chicken breast, chicken broth, thyme, salt and pepper. Give everything a quick mix, close the lid and turn the valve to sealing. Use the manual setting to cook the chowder for 10 minutes. After 10 minutes, use quick release by turning the valve to venting with the back of a spoon. Turn on the saute function (switch to normal heat) and bring the soup to a simmer. Whisk together cream and flour and add it to the soup. Keep stirring the soup till it comes to a boil. Simmer for 4-5 minutes till the soup thickens and turn off the Instant Pot. Mix in the bacon, add some chopped chives. If the soup is too thick, add a little water, milk or broth to it to adjust the consistency.