In a large sauté pan, or a dutch oven, heat the olive oil over medium heat and add the diced pancetta. Cook until crisp, then remove to a paper towel lined plate for later. Leave the oil in the pan, and add the onion, carrot, and celery, stirring to soften for about 4-5 minutes. Add the garlic, rosemary, thyme and fennel seeds, along with a good pinch of kosher salt and black pepper. Cook, stirring occasionally and scraping the bottom of the pan with a wooden spoon, until the vegetables are very tender and golden, about 10 minutes total. (If the vegetables are browning too quickly, lower the heat.). Add the ground pork and continue to cook, stirring frequently, until the meat is completely broken up and cooked through, about 7 minutes.
When the pork is no longer pink, add the white wine, stirring until almost evaporated, about 3 minutes. Add the chicken broth, bay leaves, and parmesan cheese rind, and bring to a boil. Reduce the heat and simmer, stirring occasionally until the mixture thickens and the flavors come together, about 15 minutes. Add the cream and grated parmesan, along with the butter, stirring to combine. Discard the bay leaves and cheese rind, and season to taste with salt and pepper.
Meanwhile, cook the pasta as directed, but making sure to keep it just under al dente. When done, reserve about 1 cup of the pasta cooking water. Toss the cooked pasta into the still warm bolognese sauce, finishing with extra pasta water to thin as needed. Top with sliced fresh basil, extra grated parmesan and cracked black pepper. Finish with the cooked pancetta bits as a delicious garnish.