01 - In a large skillet over medium heat, cook diced bacon until rendered and crispy. Transfer bacon onto a paper towel-lined plate, reserving 2 tablespoons of bacon fat.
02 - Using the reserved bacon fat, sauté onion, carrots, and celery in the same skillet for 4 to 5 minutes until vegetables are softened.
03 - Transfer sautéed vegetables, corn kernels, diced russet potatoes, garlic, and half of the cooked bacon into a slow cooker.
04 - Pour in chicken broth, then stir in salt, pepper, smoked paprika, and dried thyme until well blended.
05 - Cover and cook on low heat for 6 to 7 hours, or on high for 3 to 4 hours, until potatoes are fork-tender.
06 - With a potato masher or immersion blender, gently mash a portion of potatoes and corn in the slow cooker to achieve desired thickness.
07 - Stir in heavy cream and whole milk. Cook uncovered on high for an additional 15 to 20 minutes until chowder is heated through.
08 - Taste chowder and adjust seasoning with additional salt or pepper as preferred.
09 - Ladle hot chowder into bowls. Finish with remaining bacon bits and chopped chives.