Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast, red bell pepper, and zucchini into uniform bite-sized pieces.
In a large mixing bowl, combine the chicken, cauliflower, bell pepper, and zucchini with the olive oil, sea salt, and black pepper, tossing until every piece is well-coated.
Spread the chicken and vegetable mixture in a single layer on the prepared baking sheet, ensuring they aren't overcrowded so they roast rather than steam.
Roast in the oven for 20-25 minutes, or until the chicken is cooked through and the vegetables have developed golden brown edges.
While the tray is roasting, place a small saucepan over low heat and whisk together the coconut milk, curry powder, minced garlic, and grated ginger.
Simmer the sauce gently for about 5 minutes until it thickens slightly and the flavors meld together.
Remove the roasted chicken and vegetables from the oven and transfer them to a clean serving bowl.
Drizzle the warm coconut curry sauce over the roasted ingredients and toss gently to coat everything before serving immediately.