Preheat your oven to 375°F (190°C).
Slice the French bread in half lengthwise and place it cut-side up on a baking sheet.
Spread the pizza sauce evenly over the cut sides of the bread.
Sprinkle the shredded mozzarella cheese generously over the sauce.
Evenly distribute the crumbled Italian sausage, diced pepperoni, and diced ham on top of the cheese.
Sprinkle the grated Parmesan cheese over the meat and cheese mixture.
Add the Italian seasoning and garlic powder evenly across the top.
Bake in the preheated oven for 15-20 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let it cool for a few minutes before slicing.
Garnish with fresh basil leaves if desired, then serve warm.