Add bag of Parm Crisps to food processor. Pulse until they resemble coarse bread crumbs. Remove from food processor. Set aside.
Heat a large skillet over medium heat. Add prosciutto and cook for 3-4 minutes on each side, or until crispy.
Remove the prosciutto from the skillet and set aside on a paper towel lined plate.
In the same skillet, add the butter and heat over medium heat.
Once the butter has melted, add the garlic and cook for 2-3 minutes, or until fragrant.
Add Brussels sprouts to pan and toss to coat with butter mixture. Season with salt and pepper. Sauté for 5-8 minutes, or until tender.
Add the lemon juice and zest and stir.
Remove the pan from the stove and top the Brussels sprouts with the crumbled Parm crisps.
Break the prosciutto into pieces and sprinkle over the top of the skillet.
Toss to combine and serve immediately.