Cook pasta to package directions. Rinse & toss with olive oil.
Cook chorizo in a large saucepan until cooked through, chop it up with a spatula. Remove Chorizo from pan.
Leave chorizo oil in pan, melt butter. Add peppers & garlic, Saute over medium high heat until softened, slightly browned & fragrant about 5 minutes.
Toss shrimp with southwest seasoning. Add shrimp to pan. Cook another 5 minutes. Add chorizo & stir. Add pasta into pan. Toss well & serve hot. Top with chives.