Preheat grill to high + oil grates; grill 4 sausages 6-8 min with lid closed, rotating often until heated through

Using a sharp knife, slice sausage lengthwise, only pushing the knife about ½ way down, to split the sausages open without slicing in half; add a few peppers + 1-2 slices of mozzarella to the sausages + carefully place back on the grill to melt (about 1-2 min)

Slice head of lettuce in half, drizzle with 1 tbsp oil + salt/pep; grill cut-side down 3 min with lid closed; flip + grill 3-4 min more until charred + slightly softened

Add stuffed sausages + lettuce wedges to plates; drizzle dressing onto each wedge—yes, chef!