Sauté the mushrooms. To a sauté pan or frying pan over medium-high heat, add half the oil. Add the thinly sliced mushrooms and a pinch of salt and ground black pepper. Sauté them until golden and almost cooked through (about 5-6 minutes). Add half the minced garlic and sauté for 30 seconds.
Pan-fry the halloumi. To a nonstick sauté pan or frying pan over medium heat, add the remaining olive oil when the pan is hot. Add the halloumi cubes and cook on each side until golden (just about 30 seconds-1 minute per side).
Make the yogurt sauce. To the plain yogurt, add a pinch of salt, pepper, half the minced garlic, and minced or dried dill.
Assemble the bowl. Place the cooked couscous at the bottom of the bowl. Top with the shredded or sliced roasted pepper, sautéed mushrooms, golden halloumi cubes, and the drizzle of yogurt sauce. Serve with pita or other flatbread on the side.