Bake pastry shell at 400 degrees for 7 minutes (or buy a pre-baked shell) Heat oil in skillet Saute onion and garlic until soft Stir in ground beef, chili powder, oregano, salt, cayenne, ketchup and red pepper sauce Brown meat and break into crumbly mixture Drain off any liquid and spoon into the baked shell Beat eggs and mix in half and half, salt, chilies and cheese Pour mixture over meat Bake at 400 degrees for 40-45 minutes - until center is set and knife comes out clean Let rest for 15 minutes before serving