Preheat the oven to 375 degrees.  Set out 4 oz of a cream cheese block to soften while you prep the veggies.

In a large skillet, heat the olive oil over medium high heat.  Add the peppers and onions and cook until softened and beginning to char.  Remove from the heat.

In a mixing bowl, combine the cream cheese, cheddar cheese, and pepper jack cheese cubes.  Add the veggie mixture and mix to combine well.  

Slice a pocket lengthwise in the chicken breast.  Stuff with the veggie and cheese mixture.  In a small bowl, combine the spices.  Generously sprinkle the spices over the stuffed chicken.  Place on a baking sheet and bake at 375 for 20-30 minutes, or until the chicken is cooked through.  Serve topped with salsa, sour cream, and guacamole.