Cook your pasta al dente as per instructions on the packaging. Drain and set aside to slightly cool.
In a medium skillet over medium heat, sauté in 1 tsp olive oil for 5 minutes. Transfer onions to a bowl and set aside. To the same pan add the remaining 1 teaspoon of oil and cook your ground chicken, breaking up the meat with a wooden spoon, until no longer pink. Season the meat with salt, garlic powder, onion powder and stir until all coated. Transfer to another plate and set aside.
Dressing:
In a small bowl, whisk together the ingredients listed above until smooth. Taste and adjust if needed.
Assembly:
In a large bowl, toss together the pasta, lettuce, chicken, onions, cheddar, pickles and dressing until all coated.