First, drain the fire-roasted corn really well and add it to the crockpot. Then sprinkle the diced, de-seeded jalapeños on top, followed by the shredded cheese, salt, and pepper.
Next, spoon the sour cream over the cheese layer and drop cubed cream cheese across the top. Do not stir yet — leave the cream cheese cubes on top so they melt slowly.
Cover and cook on low for about 2 hours, until the cheese and cream cheese are melted and everything is warm. Then remove the lid, stir until fully combined, and top with crumbled bacon and sliced green onions. Serve immediately with chips or crackers.