Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 425 degrees. Wash and dry produce.

Trim, peel, and dice carrots into ½-inch pieces. Trim and halve zucchini lengthwise; cut crosswise into ½-inch-thick half-moons. Zest and quarter lemon.

In a small pot, combine rice, ¾ cup water (1½ cups for 4 servings), and a pinch of salt. Bring to a boil, then cover and reduce heat to a low simmer. Cook, covered, until rice is tender, 15-18 minutes. Keep covered off heat until ready to serve.

Toss carrots on one side of a baking sheet (spread out across entire sheet for 4 servings) with a drizzle of oil, salt, and pepper. Roast on top rack for 10 minutes.

Remove sheet from oven. Carefully toss zucchini on empty side with a drizzle of oil, salt, and pepper. (For 4, leave carrots roasting; toss zucchini on a second sheet and roast on middle rack.) Return to oven until veggies are tender and lightly browned, 10-15 minutes more.

Let veggies cool 2 minutes; transfer to a medium bowl. Toss with lemon zest and chili flakes to taste.

Meanwhile, pat pork* dry with paper towels. Season all over with salt and pepper.

Heat a large drizzle of oil in a large pan over medium-high heat. Add pork and cook until browned and cooked through, 4-6 minutes per side.

Turn off heat; transfer pork to a plate to rest.

Swap in chicken* for pork; cook 3-5 minutes per side.  

In pan used for pork, combine hot honey, jam, stock concentrates, ¼ cup water (½ cup for 4 servings), and juice from one lemon wedge (two wedges for 4). Heat over medium-high heat and bring sauce to a simmer. Cook, stirring constantly, until thickened, 2-3 minutes. Remove from heat and stir in 1 TBSP butter (2 TBSP for 4); season with salt and pepper.

Transfer pork to pan with sauce; turn to coat.

Fluff rice with a fork; stir in 1 TBSP butter (2 TBSP for 4 servings) and season with salt and pepper to taste.

Divide rice, veggies, and pork between plates. Spoon any remaining sauce over pork. Serve with remaining lemon wedges on the side.