Begin by washing and peeling the potatoes, then chop them into bite-sized cubes for even cooking. Place the chopped potatoes in a large bowl and set aside while you preheat the oven to 400°F (200°C).

In a separate bowl, mix together your preferred mustard, olive oil, garlic powder, paprika, salt, and pepper to create a flavorful marinade. Toss the potato cubes in the marinade until well coated.

Transfer the seasoned potato cubes to a plate lined with breadcrumbs, ensuring they are fully coated. Lay the breaded poppers on a baking sheet lined with parchment paper.

Bake the poppers in the preheated oven for about 25–30 minutes, flipping halfway through until they are golden and crispy.

Remove the poppers from the oven and let them cool for a few minutes before serving, garnished with fresh herbs if desired.