Preheat your oven to 500˚F.
Remove the core and seeds from the red bell peppers, and cut the peppers in half.
Lightly oil the outside surface of each halved pepper.
Sprinkle some Kosher salt on the oiled red peppers.
Place the peppers skin-side up on a parchment paper-lined sheet tray, and roast them at 500˚F for roughly 15-20 minutes, or until the skins of the peppers have turned mostly black on the outsides.
While the red peppers are roasting on high heat in the oven, place two Tablespoons of cooking olive oil or vegetable oil in a large sauté pan.
Increase the heat to medium-high and wait for one minute, or until the oil is warm.
Add the diced yellow onion, and cook while stirring for roughly three minutes.
Add the ground Italian sausage, and cook while stirring for roughly four additional minutes, or until the sausage is partially cooked through.
Add the Kosher salt, freshly-ground black pepper, red pepper flakes, and dried oregano, and cook for another four minutes.
When the sausage is completely cooked, remove the sausage and onions from the heat, and fold in the freshly-minced parsley leaves.
Set the cooked sausage and onion mixture aside to cool down at room temperature while you finish the roasted red peppers.
Remove the roasted peppers from the oven once their skin is blackened in most places.
Place the roasted peppers in a small bowl, and cover the bowl tightly with plastic wrap.
Allow the covered red peppers to steam in their own heat for an additional ten minutes.
Remove the red peppers from the bowl, and quickly remove the blackened skin of the peppers.
*Use paper towels to rub off any parts of the skin that have stuck to the flesh of the pepper.
Discard the skins of the pepper.
Cut the remaining roasted red pepper flesh into strips, and set them aside in a small bowl for lettuce wrap assembly.
To prepare the lettuce leaves, select the sixteen largest outside leaves that are study and clean from the baby Romaine lettuce heads.
Wash the leaves under very cold water, and dry them completely on paper towels.
Assemble the dried lettuce leaves on a large serving platter.
Add some of the cooked Italian sausage and onion mixture from earlier.
Top with a few pieces of sliced roasted red pepper.
Drizzle each lettuce wrap with a bit of extra virgin olive oil before serving with extra napkins.