Preheat grill to medium-high.
Trim the stem off the cabbage, then cut into quarters, and slice each quarter into 2-3 wedges, depending on the size of your cabbage. Place on a plate and set aside.
Mix together oil, spices, lemon juice and zest in a medium bowl. Use half of the oil mixture to brush all sides of the cabbage.
Place wedges on pre-heated grill and cook, turning occasionally, until charred and tender, 15-20 minutes.
Meanwhile, add lentils to the bowl with the remaining oil mixture and toss to coat.
Heat a large skillet over medium-high heat. Add lentils and shake the skillet to distribute the lentils into a single layer. Cook, undisturbed, for 3-4 minutes, before shaking the pan once more and cooking for another 3-4 minutes. Remove from heat, and season with more salt, if desired.
Whisk together the sauce ingredients. Taste and adjust seasonings, if necessary.
To serve, spread half the sauce on a serving platter. Add cabbage wedges on top of the sauce, and sprinkle with lentils and fresh herbs. Drizzle with remaining sauce and serve!