Preheat your oven to 375°F.
Cut the mini peppers in half lengthwise and remove the seeds.
In a mixing bowl, combine the softened cream cheese, shredded cheddar cheese, garlic powder, onion powder, smoked paprika, salt, and black pepper. Mix until well combined and creamy.
Using a spoon or a piping bag, fill each half of the mini peppers with the cream cheese mixture.
Place the stuffed peppers on a baking sheet lined with parchment paper.
Bake in the preheated oven for 15-20 minutes, or until the peppers are tender and the cheese is slightly golden.
If using chives, sprinkle them over the stuffed peppers before serving.
Let cool for a few minutes before serving.