In a large bowl combine the cream cheese, sour cream, mayonnaise, garlic powder, onion powder, kosher salt, cooked jalapeño, and most of the cooked bacon (reserve about 2 tablespoons). Stir in one cup of cheddar cheese and one cup of Monterey Jack. Taste and add more salt as needed.
8 ounces cream cheese, 1 cup sour cream, 1 cup mayonnaise, 1 teaspoon garlic powder, 1 teaspoon onion powder, 1/2 teaspoon kosher salt, 1 1/2 cups sharp cheddar cheese, 1 1/2 cups Monterey Jack cheese