Trim the chicken and fold out the fillet to give an evenly flat breast. Toss the chicken in the seasoned flour to lightly coat. Melt the butter and olive oil in a heavy based frypan and gently brown the chicken. Add the brandy to the pan juices and poach the chicken until tender - about 15 minutes (less if the breasts are thin).
Top each breast with a layer of cheese and spread olive paste on the top. Reduce to a very low heat, re-cover the pan and wait for the cheese to melt.