01 - Preheat oven to 400°F. Line baking sheet with parchment paper or foil for easy cleanup.
02 - Combine cream cheese, cheddar, Monterey Jack, jalapeños, green onions, and garlic powder in small bowl until thoroughly blended.
03 - Pat chicken breasts completely dry with paper towels. Season both sides generously with salt and pepper.
04 - Using sharp knife, cut horizontal pocket into each chicken breast, stopping before slicing completely through. Open carefully to create stuffing space.
05 - Fill each pocket with approximately 2 tablespoons jalapeño cheese filling. Secure with toothpicks if necessary to prevent leaking.
06 - Wrap each stuffed breast with 2 bacon slices, tucking ends underneath chicken. Secure with additional toothpicks if needed.
07 - Place chicken breasts seam-side down on prepared baking sheet, spacing evenly for proper heat circulation.
08 - Bake 30-35 minutes until chicken reaches internal temperature 165°F and bacon is crispy. Broil 2-3 minutes if extra crispiness desired.
09 - Remove all toothpicks carefully before serving. Let rest 5 minutes for juices to redistribute.