Warm olive oil in a large pot over medium heat.
Add the onion, celery, and bell pepper.
Cook until veggies are soft, about 4-5 minutes.
Stir in the garlic.
Cook for an additional minute until fragrant.
Add the corn kernels and chicken stock.
Bring to a boil, then reduce the heat to a simmer.
Stir in the crabmeat and heavy cream.
Cook gently for about 5 minutes until the chowder is heated through.
Stir in the crème fraîche and season with salt and pepper to taste.
Garnish with chives before serving.