In a medium bowl, whisk together olive oil, lemon juice, apple cider vinegar, honey, Italian seasoning, lemon zest, salt, pepper, and cayenne until well combined.
Cook the rotini according to package directions in salted water. Drain well and transfer to a large serving bowl.
Heat olive oil in a large skillet over medium-high heat.
Season the chicken with salt and pepper, then cook for about 5–7 minutes until fully cooked and lightly browned.
Pour the prepared dressing into the skillet with the chicken and simmer for about one minute, allowing the flavors to coat the chicken.
Add the chicken and dressing to the cooked pasta.
Add broccoli, bell pepper, tomatoes, cucumber, green onions, and fresh herbs.
Toss thoroughly until everything is evenly coated. This Skinny Italian Chicken Pasta Salad tastes wonderful immediately or after chilling for several hours.
Taste and adjust seasoning with additional lemon juice, salt, pepper, or Italian seasoning if desired.
Serve chilled or at room temperature.