Heat a large skillet over medium-high heat. Add bacon and cook until brown and crispy, about 6-8 minutes. Transfer to a paper towel-lined plate; set aside.
Place corn, jalapeños, sour cream, Pepper Jack and Parmesan into a slow cooker; season with salt and pepper to taste. Stir until well combined. Top with cream cheese.
Cover and cook on low heat for 2 hours.
Uncover and stir until cream cheese is well combined. Cover and cook on high heat for an additional 15 minutes.
Garnish with bacon and chives, if desired. Serve immediately.