Make harissa yogurt. Combine yogurt with harissa and grated cucumber in a medium bowl. Set aside.
Heat 2 tablespoons oil in a large saute pan over medium heat. Add chopped onions and cook until softened, about 5 minutes. Add broccoli florets and cover the pan. Cook for 7-8 minutes or until tender. Remove cover and add garlic, coriander, fennel, and rice. Stir to combine and cook until rice is warm, about 4-5 minutes.
Remove rice from heat and add orange, scallions, mint, and almonds. Season rice with lemon juice, extra virgin olive oil, salt, and pepper. Toss until well combined and set aside.
Season chicken with Italian seasoning, salt, and pepper. Lay chicken on grill and cook grill marks appear, about 5 minutes. Flip chicken over and continue to cook until juices run clear. Remove chicken from grill and keep warm.
Meanwhile, make lemon garlic sauce. Melt 2 tablespoons butter in a medium saute pan over medium heat. Add garlic and saute until golden brown, about 2 minutes. Remove from heat and add parsley, thyme, and lemon juice, stirring to combine. Spoon sauce over chicken.
Portion rice into 4 bowls and lay chicken on top. Place a generous dollop of harissa yogurt on top and sprinkle fresh dill, toasted sliced almonds, and crumbled feta. Serve immediately.
Notes
The harissa yogurt can be prepared the day before.