I would do pendants on a dimmer switch and maybe a few led spots on a separate switch for task-lighting.I don't think a chandelier etc. would look right unless the space is large and the ceiling is very high.
yes, pendant lights will look wrong on sloping ceilings. Other ideas are surface-mounted spots mounted on the sloping ceiling that look pretty cool and a bit retro, like this or even some recessed up-lighters in the floor around where your dining table would go? Like this
Hmm, builder has had some ideas that I hadn't thought of but, no, he's not an interior designerBut then,neither am I It's made more troublesome by there being a velux window over where table would be so trying to figure out if pendant/s nearby would look odd or ok. Need to see a picture to reassure me it won't look crap. But, what else do you have?