Step 1: Preheat your oven to 375°F (190°C) and lightly grease a large baking sheet with olive oil or non-stick spray.
Step 2: Wash the banana peppers and pat them dry. Using a sharp knife, make a single lengthwise slit in each pepper. Gently remove the seeds and membranes, being careful to keep the pepper intact.
Step 3: In a medium mixing bowl, combine the softened cream cheese, shredded cheddar, grated Parmesan, minced garlic, chives, smoked paprika, and black pepper. Mix until smooth and well-combined.
Step 4: Using a small spoon or a piping bag, carefully fill each pepper with the cheese mixture. Do not overstuff, as the filling will expand.
Step 5: Place the stuffed peppers on the prepared baking sheet in a single layer.
Step 6: Bake for 20-25 minutes, or until the peppers are tender and the cheese filling is bubbly and lightly golden on top.
Step 7: Remove from the oven and allow them to cool for 5 minutes before serving to let the cheese set.