Preheat oven to 375 degrees Fahrenheit. In 13x9-inch baking dish, place chicken and season with garlic salt, smoked paprika, and pepper.
Whisk milk, broth, and cream cheese. Spread mixture evenly over chicken.
Wash jalapeños and cut-off tops. Remove stems and seeds for milder or leave seeds for spicier. Cut jalapeño peppers into strips and lay on cream cheese. Sprinkle with cheddar cheese.
Bake 25 minutes until bubbly. Remove baking dish from oven 5 minutes before cooking is complete, sprinkle with bacon, and return for remaining cooking time.