Preheat the oven to 400°F (200°C).
Toss sweet potatoes with olive oil, salt, and pepper.
Spread sweet potatoes on a baking sheet and roast for 25 minutes.
Chop bell pepper, cucumber, and red onion while potatoes roast.
In a large bowl, combine roasted sweet potatoes with chopped vegetables.
Whisk together olive oil, apple cider vinegar, and honey.
Pour the dressing over the salad and toss to combine.
Add chopped fresh herbs and mix gently.
Serve chilled or at room temperature.