Reduce heat to medium and add shallots to the remaining bacon grease and cook until soft. Add sun dried tomatoes, olives, red pepper flakes, and pepper. Cook another minute, stirring constantly. Add chicken broth and bring to a low simmer. Add spinach and stir until well coated. Cover and let the spinach wilt for a couple of minutes. Stir thoroughly. Add cream and heat through for a couple more minutes. Add cooked pasta and bacon and stir until combined and heated through (2 more minutes). Serve in large bowls and dig in!