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, jalapenos, sour cream, Monterrey Jack cheese, Parmesan and garlic powder 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.
Serve immediately, garnished with bacon and chives, if desired.