Preheat your Blackstone Griddle to medium heat. Add the pancetta and cook for 6-8 minutes, tossing often. Once the pancetta is fully cooked, move it to the cooler side of the griddle.
Add Brussels sprouts and red onion to the pancetta fat with a pinch of salt and pepper. Toss and cook for about 6 minutes or until tender but not mushy.
In a small bowl, combine honey, coarse ground black pepper, and parsley. Mix evenly to incorporate all ingredients.
Combine the cooked pancetta with Brussels sprouts and onions and toss to mix.
To plate, arrange all vegetables in a family-style dish. Drizzle the black pepper honey over the top and serve hot.