Preheat the oven to 400 °F (200 °C) and line a baking sheet with parchment paper or foil.
Place a rack on the baking sheet if available to allow even cooking.
In a mixing bowl, combine softened cream cheese, shredded cheese, garlic powder, onion powder, smoked paprika, salt, and pepper until smooth.
Stir in any optional add-ins like green onions, sausage, or cayenne if desired.
Fill each jalapeño half generously with the cheese mixture without overflowing.
Wrap each stuffed jalapeño with half a slice of bacon and secure with a soaked toothpick if needed.
Place the poppers seam-side down on the prepared baking sheet.
Bake for 20 to 25 minutes until bacon is crispy and filling is bubbly.
Optionally broil for 2 to 3 minutes to enhance crispiness.
Let cool slightly before serving warm with preferred dipping sauces.