Pantheon is ruining the solo lane experience for many players in solo queue right now
He's oppressive, probably the most oppressive laner in the game. He's both anti-melee and anti-ranged and he can tower dive and assist tower dives very early because of his passive. Items like ghostblade, maw and black cleaver give him enough damage at all points in the game to 100-0 squishies so bruiser on pantheon is how he scales into the late game as a pretty scary pick. Armor pen items galore exist, in short this is a big reason for him being strong. Not to mention, he did receive an indirect buff with the dodge/block/blind changes. Thunderlords is also godlike on him and makes his full combo even dumber.
As a champion, his design is amongst the worst. It is toxic and lacks counterplay, Qs you off cooldown and finishes you off when your low. He also brings his semi global ult to the table, which is his most interesting spell but sadly it's accompanied by a bunch of low cooldown, zero decision making point and click nuke and a point and click stun. Please, destroy this champion with nerfs until you rework him. He's honestly almost as bad as laning against Yorick before he received all his nerfs - at least you could all-in Yorick at early levels, you basically have level 1 to all-in pantheon or you proceed to eat spears until he's decided he wants to finish you.

or
. They pretty much counter
.
, then you aren't going to have a fun lane.
can also counter Pantheon.
. You E him all day and heal yourself, preventing Pantheon from poking you down. The only thing that Pantheon has against Nunu is being able to interrupt Nunu's ult during teamfights with his stun.

pretty much counters him the moment he buys armor.
absolutely dominate bot lane right now.
and these 4 fucks are so disgusting that if you you basically cant blind pick anything.
since their natural sustain on top of the 4 pots means that they can outsustain Pantheon's poke. Even if your champion has no natural sustain, the cloth helps since it allows your champion to have armor to better withstand Pantheon's harass early game. And there is rarely a champion that can't transform that cloth into an useful item.
into
, since your goal is to afk farm. If you can easily farm more, finish FH, if not, finish Spirit Visage and play it safe. Another important thing is to never, ever buy a sheen item unless you are FAR behind (to make up for lack of stacks). Sheen items account for less than 1/8 of your damage later and make you far squishier.