Cook all the pasta according to packet directions, drain. If you have room on your stovetop while pasta is cooking, get started on the salmon and vegetables.
In a frying pan heat a little olive oil and add the salmon fillets. Sear on each side for a total of around 4-5 minutes and then break into pieces, checking for bones. If bought with skin on, it will peel off easily once cooked. Place on a paper towel.
In the same frying pan add the spring onion and garlic, sauté for 1-2 minutes
Add in celery, corn, sour cream, cheese parsley, lemon juice and zest, half the chives and remove from heat, stirring