Preheat your oven to 425°F (220°C) and position a rack in the center.
In a skillet over medium heat, warm 2 tablespoons of olive oil. Add breadcrumbs and stir until golden brown and crispy (4-6 minutes). Transfer to a bowl to cool.
Once cooled, toss breadcrumbs with chopped parsley.
In a food processor, combine feta, ¼ cup olive oil, lemon juice, salt, and pepper. Blend until smooth and creamy. Taste and adjust seasoning if needed.
Slice the rainbow carrots into even sticks for uniform roasting. Toss them with 3 tablespoons olive oil, cumin, salt, and pepper in a large bowl.
Spread the carrots evenly on a baking sheet and roast in the oven for 15-20 minutes, flipping midway. Look for browning on the edges and tender centers.
Arrange roasted carrots on a platter, leaving space in the middle for the whipped feta. Spoon the feta into the center and sprinkle breadcrumbs on top.
Garnish with parsley sprigs and serve immediately.