Preheat a panini style grill. Lightly grease with nonstick spray.
** If using bacon. Cook on both sides until crispy (or to your liking). Set aside on paper towels.
Spread the cream cheese one of the slices of bread. Layer with jalapeno, (bacon if using), cheddar cheese, and the other slice of bread. Repeat for other sandwiches.
Cook on the panini grill until golden brown on both sides and the cheese is melted. (Alternatively, Heat a non-stick pan or skillet over medium-low heat. Lightly grease with nonstick spray, place the sandwiches in the pan (in batches if needed). Cover with a lid and cook on both sides until golden brown and the cheese is nice and melty.