1. Cut the chicken into 1-inch pieces and place in a bowl. Season with salt and pepper, then sprinkle half of the seasoning mix over the top. Drizzle with half a tablespoon of olive oil and toss to coat evenly.

2. Heat 1 tablespoon of olive oil in a large 12-inch skillet over medium-high heat. Add the seasoned chicken and cook for 6 to 8 minutes, turning occasionally, until browned and cooked through. Transfer to a plate, cover, and set aside.

3. Return the skillet to the stove and heat the remaining olive oil. Add the sliced onion and cook for 2 minutes, then add the broccoli, zucchini, and bell peppers. If needed, add a little more oil to the pan. Season with the remaining seasoning mix, along with a pinch of salt and pepper. Cook for 4 to 6 minutes, stirring occasionally, until crisp-tender.

4. Pour the chicken broth into the skillet and stir to combine. Return the cooked chicken and any accumulated juices to the pan, and cook for an additional minute to allow flavors to meld together.