If he doesn't seem interested in them at all I would say he's just not hungry.
1	If	if	SCONJ	IN	_	5	mark	5:mark	_
2	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	5	nsubj	5:nsubj|6:nsubj:xsubj	_
3-4	doesn't	_	_	_	_	_	_	_	_
3	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	5:aux	_
4	n't	not	PART	RB	_	5	advmod	5:advmod	_
5	seem	seem	VERB	VB	VerbForm=Inf	13	advcl	13:advcl:if	_
6	interested	interested	ADJ	JJ	Degree=Pos	5	xcomp	5:xcomp	_
7	in	in	ADP	IN	_	8	case	8:case	_
8	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	6	obl	6:obl:in	_
9	at	at	ADP	IN	_	10	case	10:case	_
10	all	all	DET	DT	_	6	obl	6:obl:at	_
11	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	13	nsubj	13:nsubj	_
12	would	would	AUX	MD	VerbForm=Fin	13	aux	13:aux	_
13	say	say	VERB	VB	VerbForm=Inf	0	root	0:root	_
14-15	he's	_	_	_	_	_	_	_	_
14	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	18	nsubj	18:nsubj	_
15	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	cop	18:cop	_
16	just	just	ADV	RB	_	18	advmod	18:advmod	_
17	not	not	PART	RB	_	18	advmod	18:advmod	_
18	hungry	hungry	ADJ	JJ	Degree=Pos	13	ccomp	13:ccomp	SpaceAfter=No
19	.	.	PUNCT	.	_	13	punct	13:punct	_
