Cook pasta in a large pot of boiling water for 7-9 minutes. Add broccoli rabe in the last 2 minutes of cook time then drain and set aside.
Meanwhile, mix fennel seeds, paprika, onion powder, 1/2 tsp salt and 1/2 tsp pepper with ground turkey in a large bowl.
Heat olive oil in the same pot, then add ground turkey mixture, breaking up with a spoon. Cook for 5 minutes until browned. Add garlic and saute for 30 seconds until fragrant.
Add pasta and broccoli rabe back to pot, then add chicken broth, lemon juice, lemon zest, remaining 1/2 tsp salt & 1/2 tsp pepper, parmesan cheese and chili flakes, sauteeing for another 2 minutes.
Serve with extra parmesan cheese and chili flakes and enjoy!