You might be able to by removing all the pan bolts except the last two at the rear. Then jack up engine, place 2x4's at the engine mounts, and gently pull down at front of pan and remove/replace front oil pan seal, then rebolt everything back together.
Remember, the seal goes over the top of the pan gasket, so hopefully, the gasket will remain in place. If not, or it tears, remove two bolts, and drop the pan, replace gasket and seals.
If the oil pan is original, then it will be the thick seal. If the pan has ever been replaced, it will be the thin seal. Measure from the oil pan rail to the bottom of seal opening in pan, 2 3/8 inches = thick seal; 2 1/4 inches = thin seal.
It is a tough job, especially being on your back, and the tool you need is in the tool box in the garage.
Are you sure the oil seal in the timing cover is not leaking, rather than the pan seal? That one can be changed without removing the cover, but have to remove/replace the harmonic balancer. I suggest to remove radiator to gain more room, plus prevent damaging radiator.