Sauté bacon in butter until crispy, then set aside, leaving the fat in the pot.
Sauté celery, onions, jalapenos, scallions, and garlic in the bacon-and-butter fat until soft.
Add potatoes, salt, pepper, and bacon to the softened mixture.
Pour in the broth and bring to a strong simmer.
Whisk cornstarch into some water to form a slurry.
Stir the slurry into the soup and bring to a boil.
Turn the heat down and stir in frozen corn and heavy cream.
Lay the salmon pieces on top of the simmering chowder, cover, and simmer until the salmon is cooked.
