If you want to deal damage as a fighter, you don't go for a Dexterity based build.
If you got rid of Dodge and Weapon Finesse and picked up Power Attack and Robiliar's Gambit, you'll see a massive increase in DPS.
Unusually, I'll have to disagree with Dandu here. In an AoO build, Dex cannot be too high, and will likely be higher than your Str. Might as well take advantage of the fact by using Weapon Finesse - IF you have the feat to spare, that is!
Dodge, on the other hand, is one of the most abysmal feats out there. How about Run or Lightning Reflexes... or something useful instead?
Two levels of
Passive Way Monk will stand you in good stead.
Karmic Strike and Robilar's Gambit may be ruled to stack by your DM - or they may not. In the latter case, only get one. Robilar's Gambit is much the better feat, but can't be taken until higher level. Maybe take Karmic Strike, then retrain later?
Definitely invest in a reach weapon and get rid of Scimitars. You're getting a large enough number of attacks from AoOs (you can hope), so TWF is even more suboptimal in your case than it already is normally. The Spiked Chain would go nicely with Weapon Finesse if you want that, while the Guisarme saves a feat. If you take a Guisarme, you can still threaten the area directly surrounding you with Armor Spikes, or Unarmed Strikes, if you have Monk levels.
Combat Expertise can be an OK feat, but usually it isn't worth it. If you're going for Improved Trip with your Guisarme or Spiked Chain, though, it's a prereq, might as well use it from time to time. Note that your Int needs to be at least 13, which can be a pain. Again, take Passive Way Monk to avoid that.
Martial Study and Martial Stance to get your hands on the Thicket of Blades stance are highly recommended in every AoO build!