Preheat your oven to 400°F.
Slice the red bell pepper into strips and chop the broccoli into florets. Toss them lightly with olive oil, salt, and pepper, then spread on a baking sheet. Roast for 15-20 minutes until tender and slightly charred.
Season the chicken breast with salt, pepper, and minced garlic. In a skillet over medium heat, cook the chicken for about 5-6 minutes per side until fully cooked and lightly browned. Once cooked, let it rest and then slice into strips.
Cook the whole wheat pasta according to package instructions. Reserve a spoonful of pasta water if needed.
In a small bowl, mix the plain Greek yogurt with a pinch of salt, pepper, and any remaining minced garlic to create your creamy sauce.
Combine the pasta, sliced chicken, and roasted vegetables in a large bowl. Drizzle any residual pan juices over the mix.
Fold in the creamy yogurt mixture, adding a little pasta water if needed to achieve a smooth consistency. Adjust seasoning as necessary.
Serve immediately while warm, enjoying the blend of creamy texture, roasted flavors, and garlicky zest.