Melt Butter with Olive Oil in skillet over medium heat. Add Shallots, Garlic, and Habanero Pepper and cook until lightly browned.
Pour Cream into separate saucepan and bring to simmer over medium heat.
Stir in ingredients from skillet, along with diced Tomatoes. Mix in Flour and Black Pepper and simmer until thickened, about 7-8 minutes, stirring often.
Stir in Parmesan Cheese and remove from heat.
Allow sauce to cool for several minutes before serving over Hot Habanero Fettuccine.