Turn on the electric pressure cooker and select the “Sauté” mode. Cook the bacon for about 5 minutes, or until crisp. Retain about 1 tablespoon of bacon fat in the pot. Transfer the bacon to a plate lined with paper towels and set aside.
Add the leeks and celery and cook for 3 minutes, until the vegetables start to become soft. Turn off the “Sauté” mode.
Add the potatoes, corn, stock, and cooked bacon, and stir to combine.
Secure the lid. Select the “Manual” mode, and set the cooking time for 7 minutes under High Pressure. When the cooking cycle is complete, quick release any remaining steam.
In a separate bowl, whisk together the cornstarch and heavy cream. Select the “Sauté” mode again and bring the soup to a simmer. Then, add the cornstarch mixture and stir for about 1 minute, until the soup is thickened. Stir in the lobster meat and simmer until heated through. Turn the electric pressure cooker off.
Season with salt and pepper to taste. Garnish with the chives before serving.