Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Chop the zucchini, red bell pepper, and red onion into uniform, bite-sized pieces.
Slice the chicken breast into thin strips and place them on the baking sheet along with the chopped vegetables.
Drizzle the chicken and vegetables with olive oil, then sprinkle with sea salt, black pepper, and dried oregano, tossing well to coat.
Roast in the oven for 15 to 18 minutes, or until the chicken is cooked through and the vegetables are slightly caramelized.
While the tray roasts, bring a pot of salted water to a boil and cook the lentil pasta according to the package instructions until al dente.
Drain the pasta and transfer it to a large bowl, then toss in the roasted chicken and vegetables.
Finish the dish with a squeeze of fresh lemon juice and a garnish of chopped fresh parsley before serving.