Preheat the oven to 400°F and line a large baking sheet with parchment paper.
Place the broccoli florets on the sheet and drizzle with olive oil, then sprinkle with ground coriander and half of the sea salt and black pepper.
Roast the broccoli for 20 minutes until the edges are crispy and slightly charred.
While the broccoli roasts, season the chicken breast with the remaining salt and pepper, then pan-sear in a non-stick skillet over medium-high heat for 6-7 minutes per side until cooked through.
Let the chicken rest for 5 minutes before slicing it into thin strips.
In a small saucepan, gently warm the cooked lentils over low heat until heated through.
Assemble the bowl by layering the warm lentils, sliced chicken, and roasted coriander broccoli.
Finish the dish with a dollop of Greek yogurt, a squeeze of fresh lemon juice, and a sprinkle of chopped cilantro.