Hello! Yes, those are clogged femoral pores. This could have happened due to lack of proper husbandry or not having enough rough items in the enclosure so that he can properly rub them off. If they are clogged ( which yours definitely looks clogged ) soak him in a warm bath for 10-15 minutes then CAREFULLY scrub them off with a soft-bristled toothbrush if they do not come off repeat steps daily and if they haven't come off after trying multiple times or you do not feel comfortable removing them take him to the vet to have them safely removed! After removed keep his environment very clean as at this stage they can become easily infected! Remember do not pull or pluck them out this can be dangerous! Tell me how everything goes!