1. Preheat the oven to 400°F (200°C).
2. In a skillet, heat olive oil over medium heat. Add diced chicken tenderloin, season with salt and pepper, and cook until browned and cooked through. Remove from heat.
3. Prepare the herb cheese topping by mixing grated Parmesan, minced garlic, chopped basil, thyme, and softened butter in a bowl until well combined.
4. Spread the herb cheese mixture over the baguette slices and place them on a baking sheet.
5. Toast the baguette slices in the oven for 5-7 minutes, or until the cheese is bubbly and golden.
6. Top each cheesy baguette slice with a few pieces of the cooked chicken tenderloin.
7. Garnish with extra chopped basil if desired and serve immediately.