Preheat your oven to 400°F and prepare a baking sheet with parchment paper.
Cook the chickpea penne in a pot of boiling water according to package directions until al dente, then drain and set aside.
Dice the zucchini, red bell pepper, and red onion into uniform bite-sized pieces.
Toss the vegetables on the baking sheet with olive oil, sea salt, black pepper, and dried oregano until evenly coated.
Roast the vegetables in the oven for 15-20 minutes until they are tender and show slight caramelized edges.
While the vegetables roast, sear the chicken breast in a skillet over medium-high heat until fully cooked, then dice into small cubes.
In a large mixing bowl, combine the cooked penne, roasted vegetables, diced chicken, minced garlic, and marinara sauce.
Transfer the mixture to a baking dish and sprinkle the top evenly with the grated parmesan cheese.
Bake for 10-12 minutes until the sauce is bubbling and the cheese has melted into a light golden crust.