Well, in my birth chart,(12 october 1980 00:10 AM in Paris, France) everything is concentrated under the center between house 1 and 5, there is just Chiron in taurus in house 10.Nothing at all in house 6, 7, 8, 9, 11, 12.
I think It's kind of weird and not very common but I have no competence in astrology.
Does anybody know if there is a specific meaning to It?
There is absolutely nothing going on in 6 houses in the right side of the chart.
There are really two related issues here, the first being the number of empty houses (and indeed the issue of empty houses), the second being the 'shape' of the chart - which many current Astrologers would describe as 'bucket shaped' - Chiron being the 'handle' of the 'bucket'.
Firstly, I'll mention empty houses, as that's something that is often asked about, though I suspect in this case you're more interested in the second issue of 'shape', which I'll go on to comment on.
Unless you throw in Sun, Moon, the seven currently known planets, various dwarf planets, the asteroids and other astronomically recognised bodies, you are unlikely to get something in every house. Even if you throw in the kitchen sink, so to speak, you will still find charts with one or two houses empty. Some beginners take that to mean that nothing will happen related to those houses - in this case you won't get born (nothing in the first), get married (nothing in the seventh), have a job (nothing in the tenth), travel abroad (nothing in the ninth) get ill (nothing in the sixth) or have any friends (nothing in the eleventh). Put like that you can see that the idea is simply 'silly'. In traditional Astrology, empty houses are still active through their sign rulers - so in your case you have Leo on the cusp of your first house, so your life is signified by the Sun and it's condition in your chart. Your career is signified by Mars, ruler of your Aries MC, and so on. Where you do have planets in a house, they will contribute, sometimes possibly make the main contributions to that area of life. So you can still 'read' for every area of life, using the chart that you have.
There is a fairly common current theory that the shape of your chart can give more information about you, on top of that gleaned from planet and house placements and the aspects (or lack of them) between the planets, and indeed other bodies, such as Chiron, that you use. Whilst that is not something that I personally make much use of (if any) I can give you a brief summary, which others might want to add to.
The bucket pattern is actually reasonably common, though it does not have to lie in the specific houses that yours does. - it can be upside down, or on it's side (either way). The psychological view is that the main mass of planets (houses 2-5 - i,e, Venus to Neptune) form a highly energised group, which tends to release it's energy through the sole lone planet (or occasionally a conjunction of two). So the energy of those planets will release themselves through Chiron in your tenth house.
I could at this point give you an explanation along the lines of Chiron being the wounded healer, you use your occupation to channel the 'wounds' that you have in this life (or for some, previous lives). Obvious possible careers would be in charity, aid relief, health care. I could say that but I would not believe it. I don't use Chiron and it's not a planet that is universally used, even by modern Astrologers.
Of course that would still leave the concentration of planets in the bottom half of your chart and this would form another such pattern called a 'bowl'. This is a less powerful pattern, though it's adherents see it as indicating a 'void' - the 'empty' part of the chart and how the native tends to try and fill it through their actions elsewhere. Again it's not something that I personally use, as you don't have any 'void' in the traditional approach - each area of your life is represented, some may be more stressed and indeed more successful due to the condition of their ruler or their 'tenants' but they still are all there.