Season the chicken breast fillets, fry them, let cool slightly and cut a pocket into them. Then fill this with thinly sliced feta cheese and place in a greased baking dish. Spread the rest of the feta cheese in medium-thick slices over the fillets. If necessary, spice it up a little.
Then bake the whole thing at 150 ° (convection) for about 45 minutes (for me it is usually fine, but with a sense of proportion. Depending on what the cheese looks like. The edges may be a little brownish. But it tastes wonderful, I agree!
I usually serve spaetzle with a delicious chicken sauce.