Fill a medium pot 3/4 of the way up with salted water; cover and heat to boiling on high. Wash and dry the fresh produce. Drain and rinse the chickpeas. Cut the zucchini into 1/2-inch rounds. Quarter and deseed the lemon. Halve the tomatoes. Halve the cucumber lengthwise, then thinly slice crosswise. Peel 2 cloves of garlic. Roughly chop 1 clove. Using a zester or the small side of a box grater, finely grate the remaining clove into a paste. In a bowl, combine the halved tomatoes, sliced cucumber, the juice of 2 lemon wedges, up to half the garlic paste (you will have extra), and a drizzle of olive oil. Season with salt and pepper; stir to combine. Set aside to marinate, stirring occasionally, at least 10 minutes. Taste, then season with salt and pepper if desired.

Add the couscous to the pot of boiling water and cook, stirring occasionally, 5 to 7 minutes, or until tender. Turn off the heat. Drain thoroughly and return to the pot.

In the same pan, heat a drizzle of olive oil on medium-high until hot. Add the zucchini rounds in an even layer; season with salt and pepper. Cook 3 to 4 minutes per side, or until browned and softened. Turn off the heat.

Transfer the cooked zucchini to a plate; cover with foil to keep warm. Pat the chicken dry with paper towels; season with salt and pepper on both sides. In the same pan, heat a drizzle of olive oil on medium-high until hot. Add the seasoned chicken. Cook 6 to 9 minutes per side, or until browned and cooked through.* Transfer to a cutting board. When cool enough to handle, slice crosswise.

*The USDA recommends a minimum safe cooking temperature of 165°F for chicken.

To the pot of cooked couscous, add the feta (crumbling before adding) and marinated tomatoes and cucumber (including any liquid). Drizzle with olive oil and season with salt and pepper. Stir to combine. Taste, then season with salt and pepper if desired. Slice the cooked chicken crosswise. Serve the finished couscous topped with the cooked zucchini, cooked chickpeas, sliced chicken, and tzatziki. Enjoy!