In a large nonstick skillet; cook the sausage, bell pepper, and onion until the sausage is cooked and the vegetables are tender, about 10 minutes. Drain off the fat.
In a large bowl; whisk together the flour, baking powder, herbs, and salt. Add the olive oil and buttermilk and stir gently, just until combined. Spread this mixture in the bottom of the prepared pan.
Recipe from Good Cheap Eats: Dinner in 30 Minutes (or Less!) by Jessica Fisher (The Harvard Common Press, 2015), reprinted with permission.