Yes, EGGPLANT is a Scrabble word!

Letter values in Scrabble US: E 1, G 2, G 2, P 3, L 1, A 1, N 1, T 1.

Is it a valid word?

EGGPLANT is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

egg-shaped vegetable having a shiny skin typically dark purple but occasionally white or yellow
hairy upright herb native to southeastern Asia but widely cultivated for its large glossy edible fruit commonly used as a vegetable

Also: mad apple, eggplant bush, garden egg, solanum melongena.

Not playable in Scrabble US: BRINJAL.