Cook pasta in plenty of salted water until just al dente. Drain, reserving a splash of pasta water.
Sauté aromatics: heat olive oil, then add garlic, chilli, and onion. Cook 1–2 min until fragrant.
Cook prawns: add prawns, seasoning with salt & pepper, cook until pink . Remove and set aside.
Build sauce: add tomatoes to pan, simmer 5 min. For a creamy twist, stir in cream or leave out if preferred
Combine: toss pasta & prawns back into the pan, add lemon juice & zest, fresh herbs, and a little reserved pasta water to loosen.
Finish & serve: swirl in a pat of butter (optional), season to taste, top with baby spinach, basil and parmesan.