Toast breadcrumbs in a skillet until golden; mix with red pepper flakes and grated parm.
Pat shrimp dry, season with salt.
In a pot, reduce wine by 60-70%, then add butter, shallots, chilies, and tarragon; cook until shallots are translucent. If you have a thermometer, set the temp to 135-140 F.
Add shrimp, poach in the butter-wine mix over low heat until opaque (8-10 min). If you have an internal thermometer, the temp should be 145F internally.
Boil water for pasta. Add 2-3 tbsp salt.
Transfer shrimp to a plate. Set aside.
In a separate large skillet, combine 1-2 tbsp of reserved wine butter, truffle tapenade & the truffle oil over medium heat. Cook for 2-3 min, until slightly reduced. Add heavy cream. Stir until well combined and let simmer until thick, about 4-5 min.
Cook pasta until al dente.
While that’s cooking, chop shrimp or tear with clean hands. Leave 1 shrimp whole per plate you’re serving for garnish.
Transfer the pasta to the pan with the sauce. Toss and add a splash of pasta water with the Parm. If needed, adjust the truffle oil to taste or add more of the flavorful white wine butter. Stir until the pasta is completely coated in the sauce. Adjust seasonings/cream if necessary.
Plate with chives, breadcrumbs & whole shrimp.