Place the baguette slices on a large baking sheet in a single layer.
In a medium bowl, stir together the tomato, red bell pepper, orange bell pepper, black olives, garlic and parsley.
Stir the pesto into the tomato mixture until combined.
Scoop one rounded tablespoon of the mixture on each baguette slice. Sprinkle the Parmesan cheese over top.
Bake until the cheese is starting to melt and the crostini are heated through, 7 to 8 minutes. Garnish with parsley. Serve.
Notes
Please note that I am not a medical or nutritional professional. I provide nutritional information for my recipes as a courtesy to my readers. It is calculated using the built-in recipe card calculator. While I attempt to provide information that is as accurate as possible, you should calculate the nutritional information independently before relying on it.