Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Dice the carrots, zucchini, and yellow squash into small, kid-friendly bite-sized cubes.
Toss the diced vegetables on the baking sheet with olive oil, sea salt, and black pepper until evenly coated.
Roast the vegetables for 15-20 minutes until they are tender and slightly golden around the edges.
While the vegetables roast, place a large skillet over medium-high heat and add the ground turkey.
Cook the turkey, breaking it up with a spatula, until it is browned and cooked through.
Stir the cooked lentils, garlic powder, and onion powder into the skillet with the turkey.
Reduce the heat to low and let the turkey and lentil mixture warm through for about 3 minutes.
Remove the roasted vegetables from the oven and fold them gently into the skillet mixture.
Serve warm, ensuring each portion has a colorful mix of turkey, lentils, and roasted vegetables.