Cook the pasta: Bring a pot of water to a boil and add 1 teaspoon salt. Cook the fusilli according to the package directions until tender. Drain well and set aside to cool slightly.
Cook the bacon: Heat 1 tablespoon vegetable oil in a skillet over medium heat. Add the chopped bacon and cook until golden and crisp. Transfer it to a plate, leaving the rendered fat in the skillet.
Cook the chicken: Season the chicken breast with salt and black pepper. Cook it in the same skillet until golden on both sides and cooked through. Let it rest for a few minutes, then cut it into small bite-sized pieces.
Prepare the vegetables: Finely chop the red onion and dice the Kapia pepper. Drain the canned corn well.
Make the dressing: In a small bowl, mix the mayonnaise, sour cream, minced garlic, chopped parsley, 1/2 teaspoon salt, and 1/2 teaspoon black pepper until smooth.
Assemble the salad: Add the cooled pasta, chicken, bacon, red onion, pepper, and corn to a large bowl. Pour the creamy garlic dressing over everything and gently toss until evenly coated.