Prepare pesto sauce using a blender or food processor. Combine Olive oil, basil, garlic and pine nuts. Process but do not create a puree. Stir in 1/2 cup grated Parmesan cheese. Set side.
Saute onions and peppers in one tablespoon olive oil and water in a large skillet over medium heat. Stir frequently until peppers are soft. Drain and set aside. Brown sausage, breaking into pieces as it cooks. Drain off excess fat. Chop coarsely and set aside.
Preheat oven to 400 degrees. Spread remaining olive oil evenly over a 12--inch pizza pan. Sprinkle with cornmeal. Punch down pizza dough, flatten lightly with a rolling pin, turn and flatten with fingers. Place dough in pan and spread to edges with finger tips. Bake five minutes. Spread pesto sauce over dough. Crumble goat cheese evenly over pesto. Add onions and peppers, sausage, and cheeses. Bake 10 minutes or until crust is slightly brown and cheese is bubbly..