Soak Chia seeds with 6 tablespoons of water for about 10 minutes. Cut the peppers in half lengthwise, clean and wash. Wash and clean spring onions and cut into fine rings. Crumble the cheese coarsely. Put the chia seeds in a sieve and let them drip off.
Mix the feta cheese, spring onions and chia seeds, season with lime juice, salt and pepper. Fill the bell peppers with the sheep's cheese mixture and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 12 minutes. Remove the bell peppers from the oven and sprinkle with coarse pepper.