Preheat your oven to 400°F (200°C). Wash the mini bell peppers thoroughly and dry them with a paper towel.
Using a paring knife, carefully carve a small face or eyes into each pepper to resemble tiny Jack-o'-Lanterns, making sure to remove the tops and seeds.
In a mixing bowl, combine the shredded cheese, cooked quinoa, hot sauce, paprika, salt, and pepper. Mix well until all ingredients are evenly incorporated.
Use a small spoon or vegetable scoop to carefully stuff each carved pepper with the cheese mixture, filling them to the top but not overflowing.
Arrange the stuffed peppers on a baking sheet lined with parchment paper. Brush each pepper lightly with olive oil to promote browning.
Place the baking sheet in the oven and roast for about 15 minutes, or until the peppers are tender and slightly charred at the edges, and the cheese is melted and bubbly.
Remove from the oven and let cool slightly. Then, serve these playful Jack-o'-Lantern peppers warm, ready to add a fun and spicy touch to your Halloween table.