Cook the pastas as directed.
Meanwhile, slice the mushrooms, bell pepper, tomatoes and cauliflower. Dice the onion. Put all the vegetables into a large salad bowl.
Drain your pastas and rince them with cold water until they're cold. Add to the bowl.
Dice your canned chicken. Add to the salad.
Mix throughly and add mayo and pesto, then spices.
Let sit into the fridge for about 2 hours and enjoy :)