In a small bowl, whisk together olive oil, lemon juice, dried parsley, dried basil, dried oregano, and ground black pepper. Pour over chicken, bell peppers, tomatoes, zucchini, and red onion and toss to coat.
Spread chicken and veggies evenly onto prepared baking sheet and bake in preheated oven for 20-30 minutes, or until chicken reaches an internal temperature of 165 degrees Fahrenheit.
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Notes
If using fresh herbs instead of dried use 3x as much.
You can use cherry tomatoes or your other favorite instead of grape tomatoes, if desired. To add more color, try using multi-colored tomatoes!
Store any leftovers in an airtight container in the refrigerator for 3-5 days.