I think whole-roasted vegetables are beautiful. Keeping the stems/greens on are a perfect way to highlight the notion that root to tip are edible. Carrots are one my favorite vegetables to do this with but I've found over the years that I much prefer to quarter the carrots. Serving someone a whole carrot to cut seems a bit more overwhelming than if the carrots are in thinner, asparagus-size strips.
These harissa roasted carrots are a solid lunch for me. However, I've also served them with a poached egg and toast for a beautiful breakfast. Also, you can make extra of the the beans. They are great tossed with a simple salad or grains.
Beans: I love the small white beans for this dish but you could easily use chickpeas are even black lentils.
Spice Mixture: Harissa typically has a solid kick to it and even though I only use a small amount, it's there. If you want to make this without the heat, use 1 teaspoon smoked paprika with about 1/2 teaspoon of cumin and coriander.
Seeds: Try using toasted sunflower seeds in place of the pepitas. Slivered almonds would also work well.
I find myself always pairing carrots with grains. The combination of the earthy/sweet carrots works well with most grains and can come together to form a wholesome meal. Plus, carrots work with minimal (or no) cooking- a big plus in my kitchen. Also, I recommend looking for different varieties of carrots- they all have different flavors. A few of my favorite easy carrot recipes:
Cumin Braised Carrots with Chickpeas
Pickled Carrot and Hummus Sandwich
Roasted Carrots with Couscous and Gremolata